What should I do if I fall for my unemployed childhood friend living next door?

Ah... so... episode 11

Female Lead: Ah... f... fuck... first... I have to get out...
Taesan: ...(Yawn).. Woke up?
Female lead (fuck)
Taesan: ?Did you ask if I woke up?
Female Lead: Uh...^^
Taesan:....? Why are you looking at me like that?
Yeoju: Why is he sleeping here when it's the house right in front?
Taesan: Because you threw up on my clothes and slept.
Female Lead: ....Ah...
Taesan: It's the weekend anyway... so let's go hang out!
Female Lead: OO, follow me
Taesan: ㅇㅇ
- Board Game Cafe
Yeoju: Hi, sis
Relative: The boyfriend next to OO? To the female lead....?
Female Lead: I'll kill you, you bastard.
Relative: There's a couple's discount...
Female Lead: He's OO's boyfriend
Relative: Heh, go in there.
Yeoju: o
-entry
Female Lead: Han Dong-min Jenga
Tesan:o
Rock, Paper, Scissors!!!
Female Lead: I'll go first.
Taesan: ㅇㅇ
Female Lead: ...Is this Couple Jenga?
Taesan: ㄴ
Yeoju: ..It's written on the box...
Taesan: ...Ah... Spring now
.....
Taesan: But if I don't do it, I lose....
Female Lead: Ah... I mean....
Taesan: What is it... (kisses on the cheek)... heh. What, lol. Do I look like a guy to you? lol
Yeoju// Would you?!
Taesan: Hahaha, I can do that, though.
Female Lead: What?!
Taesan: Are you expecting that? Just kidding... heh
Female Lead: I told you it's not!
Taesan: By the way, why did you break up with your boyfriend?
Female Lead: ...I mean...