May 2011. Yonghwa was announced to be part of the drama Heartstrings with Park Shin Hye. Yonghwa told Seohyun about that prior to the announcement.

From: My baby~

Annyeong sarang~ah! How's Japan? :) I'm missing you so much my love... I have some great news here. It's final. I'll be in a drama with Shin Hye! :)

Seohyun who was in Japan preparing fir their 1st Japanese Album, got Yonghwa's message and replied.

From: Love~

I'm doing great! We're rehearsing our dance for our guestings on June. We'll be dancing a song from the new album. I miss you too sarang~ah :-/ Wah! That's great to hear Yong~ Fighting and I'll look forward to that!~

From: My baby~

Yeah! I can't wait to see your new music video and the album! It's been 2 weeks now since I last saw you. When will I see you again Joohyun? Thank you so much sarang~ah!

From: Love~

I guess we'll see each other on Pyeongchang event right? You'll attend the same event?

From: My baby~

Yeah. But we'll start filming soon. I'll be busy. And you, going back and forth to Japan. Bogoshipda~

From: Love~

I miss you too. So much! Goodluck on your filming Yong~ how I wish I can visit you on the set and just to take care of you. Bring all the things that you need and just cheer you...

From: My baby~

After the drama, I'll go to Japan and follow you on your Arena Tour. Yaahh. I miss you and I love you Joohyun~ah!

From: Love~

That would be nice~ I can't wait to see you. I love you too Yonghwa-yah! :)

From: My baby~

I'll text you later yeobo~ I need to finalize songs for the drama's OST. Do look forward too okay? I wrote that the day after we filmed our last episode in We Got Married. And then the other one after our first date. Kekeke. Saranghae~

From: Love~

Chincha? Okay yeobo~ I'll wait and listen to it :) Try to email me the song huh? Send me the demo :) fighting! saranghae~

Yonghwa arranged the songs and finalized everything. As soon as he finished the demo, he sent the song to Seohyun.

From: My baby~

Joohyun~ah, here are my songs. Saranghae~

BECAUSE I MISS YOU

Always under exactly the same sky, always exactly the same day

Other than your not being here, there’s nothing different at all

I just want to smile, want to forget everything
Just like absolutely nothing has happened, smiling to live my days

Miss you, miss you so much, because I miss you so much
Everyday all by myself, calling and calling you
Want to see you, want to see you, because I want to see you so much
Now it’s like I have this habit, keep calling out your name
It’s the same today

I thought I’d let go, not leaving anything behind
No, no, now I still can’t let you go
Miss you, miss you so much, because I miss you so much
Everyday all by myself, calling and calling you

Want to see you, want to see you, because I want to see you so much
Now it’s like I have this habit, keep calling out your name
It’s the same today

Everyday, everyday, it feels like I’m gonna die, what should I do?

Love you, love you, I love you
I hadn’t even spoken the words, I just let you go
Sorry, sorry, do you hear my words
My late confession, can you hear it
I love you

YOU'VE FALLEN FOR ME

the beginning started

coincidentally for us.
at first, I’d never knew this would
be love even in my dream,
but it is.

your heart keeps
going thump thump
you keep smiling
at me and starting to
love me without even realizing it.

you have fallen for me, fallen for me,
melted in my sweet love.
you have fallen for me, fallen for me,
mesmerized by my charming gaze.
see my eyes you fell for me
see my eyes you have fallen for me

love always comes
unexpectedly like destiny.
it soaked me like shower
I’d never know it was love.

even eyes closed,
i occur to you from time to time.
whenever you see your face blushing,
you fall in love with me without even realizing it.

you have fallen for me,
fallen for me, melted in my sweet love.
you have fallen for me, fallen for me,
mesmerized by charming gaze.
see my eyes you fell for me
see my eyes you have fallen for me

i fall in love with you too now
i will confess i am in love with you.
i fall in love with you too
my heart says i am in love with you.

see your eyes just look at me
see your eyes i love you
(see my eyes) forever and ever even after time passes
(see my eyes) without knowing it you have fallen for me

After listening to the song that Yonghwa sent, Seohyun immediately replied to his message.

From: Love~

Wah, you wrote and sang it well yeobo~ I like it. I love it. And I love you~ kekeke. Your confession was just right on time.

From: My baby~

Chincha? Wahhh. Thank you so much baby~ Saranghae~ Eii, I wrote that the day after we filmed our last episode. I just thought I will never have you back.

From: Love~

Yeah. But now you have me... I've fallen for you... kekeke. The melody is so good. You really wrote and sang it well. Congratulations in advance yeobo~

From: My baby~

You've fallen for me~ kekeke. Thank you so much for your support my love~ All I'm doing is for you~

And they continued to exchange messages together about the songs and about the drama.

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Yonghwa started filming his new drama.

During one filming, he had to act that he's kissing So Yi Hyun. But during the take, he kissed her for real.

Yonghwa felt embarrassed. He apologized to his co-actor. Until he went back to his dorm, he can't get over to what he did. He called Seohyun who's still in Japan.

"Hello? Yong~"

"De. Annyeong Hyun~"

"How's today's filming?"

"It went well yeobo~ it's just that a while ago while we're filming the kissing scene with Noona, I wasn't really able to understand the PD's instruction. I thought I'll kiss Noona for real. I'm wrong. I just have to act like kissing her. I end up kissing her for real."

"Chincha? Yaah. It's okay. I know Unnie understand that you just got confused right?" Seohyun with a sulky tone now.

"Is that so? Aissh! Pabbo! Yah Seohyun~ah! That's really so embarrassing. I just would want to be manly. Haish!"

"Yah. That's okay. I have to arrange my things. We're going home tomorrow. Do you have something else to say? Hmm?"

"Yah yah yah. I can sense something's wrong. Are you mad?"

"I don't know. I just don't feel good hearing that you're kissing someone else."

"Yah. You're the one who asked me how's my filming. I just answered your question." Yonghwa with a sulky tone too.

"Ei, you're too insensitive. Choding!"

"Wae?"

"Aishh! I don't know. I'm just being honest. Just call me if you have something else to say. I need to arrange my things."

"You're jealous?"

"Eiii, I don't know."