Looking for a manwha

Omg In like 2019 i read this manwha and i haven’t been able to find it since.

Its definitely a manwha, because they use the term sunbae in it.

It’s a smut about a girl who is a university goddess, but she secretly likes porn and wants to do more freaky stuff with her boyfriend who is also really attractive. The main character has long brownish blonde hair and a big bust, hat boyfriend has the same color hair. And there’s also this dark haired girl who has a crush on her boyfriend as is trying to win him over.

In the story the MC also has a very close friend who is a short girl with temper, and she has her own plot as well with how one of her friends which used to think she was so pretty before she cut her hair short and wore makeup and they begin dating and he is like a tall also tempered dude with dark hair.

I remember there’s this one episode where the short girl has locked the dark haired guy out on the balcony and is teasing him through the glass door, so he jumps the next balcony and has to run through another apartment to get inside where he ties her up and they get freaky idk

If anyone has any idea which manwha it can be please please please.