<human>: Just wanted to vent and want some feedback.

I'm 29 have a very good paying job, we'll respected in the industry etc. been living in my current city for about 2 years.

So I've had one real girlfriend in my life we meet when we were 21. From our first meeting I knew we'd end up together some day. She always had boyfriends so I waited for her for about 4 years. Then she was single and I finally asked her out. That lasted about 3 years until I found out she had been cheating on me from the very first date. Had slept with about half a dozen dudes and even had another boyfriend for about a year. I never suspected she was cheating so it was pretty devestating when I found out. I dumped her and haven't dated anyone in about two years now. 
So firstly everyone new she was cheating on me and never told me. Even my housemate, she told them all I beat her which wasn't true I think they kind of believed her and that's why the let her cheat. I called them all out on it after I broke up with her but nothing ever came of it. So should I stop being friends with these people? I have a fair bit of resentment towards them all.

Secondly I haven't dated anyone since her and I can't get any lady interested. I'm normal looking, good job, fair few hobbies and reasonably happy and confident. Is it maybe that I'm not as happy and confident as I think and people see that? I don't know. I'm going nowhere here as I just got knocked back by a girl again today.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Only real girlfriend cheated duration of relationship, still hurts. Can't find anyone else who likes me. Wonder of I'm the problem.