hiiii im looking for a smut manhwa, I don't exactly remember the details. But i think, it ...

hiiii im looking for a smut manhwa, I don't exactly remember the details. But i think, it was this guy and he's living with his friend ( girl ) then they have sex blablabla, and then the guy got a gf and lives in their house. so the girl ( friend ) leaves the house and they seperated. I do remember one smut scene tho, they were fucking on the couch while watching a movie. Huhuhu i hope u can help me