With my ex - within a few weeks of meeting each other and being friends, he told several stories that I thought showed a huge lack of respect for his former girlfriends/FWBs. I was interested in him despite this, and up until that point he always treated me extremely well, so I had a sit-down serious talk with him about the way he treated them and the way he still seemed to feel entitled when it came to them and their lives. He made a couple of excuses of why X treated him badly and therefore didn't deserve his courtesy, or why Y wouldn't leave him alone and so he was justified talking behind her back. But eventually he seemed to understand what I was saying, acknowledged that he was treating them poorly, and promised he would change.

He treated me very well while we were still in the early stages of the relationship, but almost as soon as we were "official" he started treating me like shit. He said terrible things about people of my ethnic background, he was carefully on his best most charming behavior when we were out with friends, but was crass and irritable when we spent time alone, would cancel plans on me last minute in favor of work or other friends, etc. etc. etc. When I asked him to treat me better, he would lay on the guilt trip about how he was so busy and stressed from work and that I wasn't being respectful and supportive enough of his needs. The only reason I didn't dump him after a week is because all of our mutual friends were like "omg finally you guys got together" when we became started officially dating, and I thought the fallout would be dramatic.

In the end, the relationship dragged on for six months, until he took me to couples' counseling and told the counselor that I was a sex addict with anger management problems (not true, btw), and that he treated me badly because I was just so angry all the time and he couldn't be loving when I was such a volatile person and he never knew how I would react to anything. I dumped him on the spot and walked out. I just know I'm his new crazy ex story for whoever he's trying to get with now.