It's been 7 months since they started dating, Yoona knew Taeyeon liked her.

But it wasn't enough to keep her heart alive.

As every day passed, she felt her heart getting weaker.

She started getting paler, Taeyeon noticed yet Yoona just dismissed her saying she was just sick.

Juhyun was worried.

Yet she knew she couldn't do anything about it.

Taeyeon had to be the first to say the words, it wouldn't work if Yoona did.

Mermaids and their unnecessary rules.

"Babe, today is your day off and I thought we could go out on a date?" Taeyeon asks Yoona, cuddling into her side.

Yoona nods, "Sure. Can we go on that place where there's that big circle with seats on it?"

"The ferris wheel?" Taeyeon chuckles, "sure."

"Yeyy! Let's go!"

~

"Do you want the pink, blue or yellow cotton candy? Or maybe you want them all?"

"Uhh.. Hehe."

Taeyeon rolls her eyes, chuckling. "Can we have one of each please, Ahjumma?"

The ahjumma nods.

"You better give me some, Yoons." Taeyeon gives Yoona a pointed look.

Yoona smiles cheekily at her, "okay, you can have this some!"

"But that's so.. Less and you have three cotton candies!"

"Aigoo, you two are so cute. How long have you two been together?" The ahjumma remarks, handing over the first two cotton candies to Taeyeon.

"Seven months ahjumma." Taeyeon replies, blushing. "And for longer I hope."

"Ahh.. Young love." The ahjumma says as she hands over the last. "Don't ever let go of each other hmm? She's a rare gem."

Taeyeon nods, a smile painting on her lips. "I intend to."

The ahjumma nods back, satisfied.

Yoona doesn't notice anything since she was already busy scarfing down the first blue cotton candy.

"Come on Taeyeoniee, I wanna try that horsie ride!" Yoona drags her away.

"Okay okay, calm down, we will."

•

"AAAAAAHHH!!" Taeyeon screams as the roller-coaster goes down, Yoona however...

"WOOOOHHH!!!!!"

"HELP HELP HELP!! IM WAAAHHHHHHHH!!!!!" Taeyeon shrieks, yet her shrieks of help were drowned out by Yoona's happy yells...

After the ride, Taeyeon almost falls over trying to get off of the ride, Yoona laughs at her, immediately reassuring her with a kiss.

Taeyeon was blushing as Yoona dragged her to another ride.

~

"Taeyeonie, can you pls get me that plushie?" Yoona pleads, her puppy eyes and pout getting intense as every second passes. "Please please pleaseeee!?"

Taeyeon was horrible at arcade games, but... Yoona.

What was she supposed to do?! Say no?

Of course not, and so she begrudgingly drags her ass to the booth. Her wallet all ready to be emptied all for that simple stupid fish plushie that Yoona desperately wants.

"Alright, how do I win that?" Taeyeon asks the ahjussi operating the booth.

"You see those cans? Knock over 3 of them and you get the fish. 100 won for each play."

"Alright," Taeyeon sighs taking her wallet out abd handing over a thousand. "I'm really horrible at these games.."

"I'm sure you'll do great. You got a girlfriend to impress after all. But the money is still mine even if you succeed at less than ten tries, alright?"

"Yea, sure." Taeyeon takes the toy gun from his hands.

After 6 horrible tries, Taeyeon succeeds at the seventh and Yoona's glowing smiling face was so damn worth it.

"So.. Do you want anymore plushies? I'll win them all for you." Taeyeon boasts.

"After six tries? No thanks, I'm going to spare your wallet." Yoona teases.

"WHaT. I'll show you!" Taeyeon drags Yoona to a booth where a big Bear plushie almost her height was showcased. "Ahjussi, how much for that?" She points to the big bear.

"200 won for each play. You have to hit all those targets."

After handing out two thousand won and consoling her crying wallet, Taeyeon starts playing.

She wins after her 12th try.

Yoona chuckles when Taeyeon hands over the gigantic bear. "I'm naming her Yeonie. Since she's your height."

"Hey!" Taeyeon grumbles, pouting. "Not even a thank you—"

"Thank you, Taeyeonie." Yoona cheekily says.

"Or a kiss?" Taeyeon looks up with a smirk.

Yoona bends down to kiss Taeyeon on the lips.

And they would have made out more if they didn't hear a little girl giggling at them.

~

It was one of those cliche moments in books or movies, where when they get on the ferris wheel and fireworks start to explode on the background, with the main characters kissing.

Only they weren't kissing, they've done lots of it earlier.

Instead, Yoona's head was on Taeyeon's shoulder, as they stared at the sight of fireworks.

It was quiet.. Peaceful and romantic.

Taeyeon felt so happy.

"Taeyeon ah," Yoona speaks up, Taeyeon hums in reply, "one day, I'll tell you something really important. You promise not to hate me okay?"

"Hmm.. I could never hate you Yoona-ah." Taeyeon says, grabbing Yoona's hands and intertwining them.

"Promise?"

"I promise." Taeyeon grips her hands tighter, Yoona returning the gesture.

Everything was fine, until they got off the ferris wheel.

Yoona fainted.

Her pulse was getting faint and Taeyeon immediately rushed her to the hospital, not knowing what to do.

No, no, no. What is happening?! We were so happy. Taeyeon grips the plushie she had won Yoona as she paced around the hospital hall.

Tears were starting to gather by her eyes, and she blinked them out, wiping them by her sleeves.

"Unnie!" She snaps her head to the left where she sees Tiffany, Sunkyu, Sooyoung, Jessica and Juhyun.

"What happened? We received your text, you said Yoona's here, Hyoyeon and Yuri unnies couldnt come, they were still at work."

"Yoona fainted.. We were on a date a-and then w-when we get off the ferris wheel, she suddenly f-fainted." Taeyeon collapses on Tiffany's chest, sobbing. Not being able to keep her sobs in anymore as she clutches the plushie.

"Im sure she'll be okay unnie. She's strong." Tiffany rubs Taeyeon's back to console her.

And just right on time, the Doctor walked out of the Emergency Room.

"We managed to revive her, but she's really weak. She doesnt have any sickness, which was why it was hard and it took long for us to revive her. Would you like to see her? But only three can come—"

"Nuh duh!" Jessica snaps, startling the doctor. "Move doctor, we're going in to see her." Jessica shoves the doctor aside, making way for the other girls to get in.

"—three can come one at a time.." The doctor sighs.

Yoona was barely awake when they got in. She looked so pale, lifeless and her body was a little cold.

Taeyeon felt her heart breaking and she shoved herself off of Tiffany to Yoona's side.

She took Yoona's cold hand gripping it tight. "Yoona ah.. What the fuck?"

"You know what?" Jessica whispers to the others, "we can check on Yoona later, lets give the lovers some privacy."

"You shove the doctor aside to get us all in, only to make us walk out without even having five minutes in the room." Sunkyu remarks as she walks out.

"I'll shove him for you guys later again! Now out!"

Taeyeon was grateful for her moronic friends, sending them a small smile as they walked out. Then she turns back to Yoona.

"You arent even sick! Why are you lying in this hospital bed and looking like you're fabulously dead?!" Taeyeon cries out.

"I hate you so much. Get the fuck up so I can tease you again for being so dumb."

"Ahhh, out of all the women in the world why did I have to fall for you?"

"You're dumb. You tease me about my height too much then you're still thin, no matter how much you eat and you almost sabotaged my hair when you tried to be my hairdresser for a day."

"You're stupid. Get up."

"AAAA YOONA AH GET UP."

Its been 30 minutes of Taeyeon cursing Yoona out, yet she was still not getting up. Taeyeon got tired and didn't notice that she fell asleep by Yoona's bed clutching her hand tightly.

Yet at the middle of the night, she was woken up by a loud screeching alarm. And a swarm of nurses and a doctor rushing in.

Also, Hyoyeon and Jessica who decided to stay with Taeyeon in the hospital. Hyoyeon arrived earlier blablabla now back to the important stuff.

"Huh? What's going on?" Taeyeon asks Hyoyeon and Jessica who was attentively surrounding her, as she rubs the sleep off her eyes.

"Unnie, we have to get out, Yoona is—"

"Yoona.. Oh Yoona." That snaps Taeyeon out of her sleepy state.

The nurses and the doctor swarming around her bed in a hurry shouting commands at each other.

The annoying screech of the heart machine..

The nurse trying to usher Jessica, Hyoyeon and her out.

Yoona.. Her Yoona..

"N-no! I need to see her!" Taeyeon starts struggling. "She needs me! Let go of me!"

"Unnie please, we have to—"

"NO!" Taeyeon cries out as she heard the heart machine blare louder. "I LOVE HER! I CAN'T LOSE HER! WHAT THE HELL IS HAPPENING!?" She struggles harder against their holds.

"YOONA! I LOVE YOU! PLEASE, DON'T LEAVE ME!" Taeyeon cries out.

"Ma'am, I'm sorry but I'm going to have to sedate you—"

And.. Taeyeon falls asleep, her body slumping and falling against Hyoyeon and Jessica's hold.

"I love you."

And the blackness finally consumes and surrounds her in a peaceful state.

~

One year later..

"You know, one day, you're going to have to tell me what really happened back there." Taeyeon states as her and Yoona's hands swing back and forth.

"I will.. But—"

"I know, you're still not ready and that's okay. It's fine with me." Taeyeon smiles, pecking Yoona's lips. "Yoona ah.."

"Hmm?"

"I love you."

Those words never fail to make Yoona's heart race.

As it did back in the hospital when her heart stopped.

"I love you more."

"Now," Taeyeon boops her nose. "That's impossible. Because, I love you most."

"Nothing's impossible in the world, Taeyeonie." Yoona pinches Taeyeon's cheeks.

"You're right. Just as how you came into my life." Taeyeon smiles, turning to face Yoona and they stopped walking by the beach.

Taeyeon kneels on one knee, pulling out a box. "Yoona-ah.. I know we haven't been together for so long.. But I love you.. And you love me. And I'm not that romantic.. Sorry about that, but let's make everything official and... Get married?"

"Yes.." Yoona's tears build up by her eyes.

And then she blinked.

Two pearls dropped onto the sand, a pink tinge shining on them as the sun reflects on it.

"Uhm.." Taeyeon blinks at the shining pearls.

Urgh, I'm so dumb..

"Now you won't want to marry me." Yoona cries more, her tears turning into pearls once they dropped off.

"U-uhh.. D-don't cry!" Taeyeon panics, as it's her first time to see Yoona actually cry. "I-it's okay! Just a little explaining or if you're not ready it's okay. I'm still, marrying you!"

Yoona stops crying. "Y-you will?"

"Yes. Ofcourse, I love you so much okay?"

Yoona sighs, pouting. She rubs her face with her sleeves and then starts to explain... Everything.

~

7 years later...

"Honey, have you taken a bath?" Yoona asks her daughter as she walks in her room. "You know how you get when you don't. You get super dry."

"Yes Eomma!" Nayoon answers as she jumps on her bed.

Taeyeon chuckles as she walks in next, "good girl."

"Mommy, mommy! How did you know Eomma was a mermaid like me?" Nayoon excitedly asks Taeyeon as Yoona tucks her in her bed.

"Well.." Taeyeon starts, looking carefully at Yoona who was blushing... Still embarassed about it even after 7 years.

"We were at the beach and then.."

After they got married, Yoona got pregnant by Nayoon on their 4th anniversary and Yoona had to leave to the sea and carry out her pregnancy. For 10 whole months, Taeyeon.. Oh poor Taeyeon she was so miserable, she missed Yoona so much and wanted to be there for Yoona..

But after 1 year and a half of Yoona's absence, Yoona came back with a little girl and it was all so worth it..

Everything was so worth it.

"Woah! Eomma's tears turned into pearls?" Nayoon exclaims, awed.

"Yes Hon. They do." Yoona tickles her daughter's stimach lightly.

"Wow! But why don't mine?"

"They will when you get older." Yoona informs her daughter.

"Okay! What happened next?"

And even if Nayoon was going to have to stay in the sea permanently when she turns 19, being a mermaid and all, unless she finds her soulmate.. Yoona knows it was going to be fine and she and Taeyeon will cherish her.

"Eomma, Mommy, I'm sleepy.."

"Go to sleep now, hun.. Goodnight."

"Night.."

~♡~

our hearts sing a song only we can hear

~•~

The End.