One short dialog that redpilled me

It happened few years ago when I had my first a girlfriend for like two months. I wasn't familiar how women behave that much and I thought the smarter ones are not whores. There was small dialog between her and her roommate (she was 8 or 9 on look scale). Roommate got back from some date and was disappointed. She was heading then to some party.

Ex: Just don't go to bed with random guy.

Roommate: I don't have place to do it anyway (pointing out that we were taking the apartment)

Edit: So conclusion is that a lot of girls when something bad is going on with their lifes they just fuck random guys.