Needs more context.

I split up with someone because he pushed me aside, lied to me, and picked fights to cover himself, so he could spend time with her, he talked about her all the time (I knew her laundry schedule) When I confronted him he just said she had a boyfriend, then listed all of her amazing qualities.

I had no problem with his other female friends (he had one very close friend over for a full weekend, while i found other stuff to do ) and wasn't even that bothered about a crush that was obviously going nowhere, but dont treat me like shit.

As the other poster says, you need to both agree on what is acceptable.If you are both happy with even as far as an open relationship, that would be fine. If you can't agree, then you arnt a good match.