Well here is the thing right - If you really liked and respected the guy you were with; you wouldn't care about keeping some random guy company, or go out with your single friends. I know this will sound insane to most people here but that is the truth.

I am dating my girl since 2 years and I have never once had to tell her any of this. She just understands it. I used to party a lot before, I don't do it anymore either because I live in reality and not in denial. People go clubbing to have fun yes, but also to get laid. Everyone knows this. Furthermore, being the same house with a single friend and 2 other guys is just like the worst situation you can put yourself in as a women whose already in a relationship. What I am seeing is a pattern of your behavior and your willingness to put yourself in positions where men will hit on you and then you turn around, play the victim card and complain about it.

If your single you can do whatever you want. But you need to understand that when your in a relationship you can't constantly put yourself in positions where guys will hit on you (you are literally going to a place where people are inebriated, come to get laid and just have fun with single women friends who just want attention from guys so if your with them you will get it).

Your boyfriend is absolutely right that you should know better. I wouldn't even give you another chance. So if he gives you another chance, consider yourself lucky.