<human>: Provide a brief overview of the text.

My last long term relationship (from when I was 19 to 21) ended very poorly and I haven't been on any real dates in the last six years since then. I think I'm probably emotionally damaged but also probably not beyond repair. Long story short she cheated on me with my best friend and then broke up with me without warning (I found out about the cheating after) which was particularly devastating because the person I was dating did not seem like that kind of person at all. Honestly, I thought this kind of thing only happened in TV and Movies. Before that point I never realized that real people would actually do that kind of thing to each other.

This has kind of stuck with me and made it very difficult to form lasting attraction toward others. It's like no matter how honest, pure, or whatever people seem I am always worried they might be a cheater. I lurk /r/relationships and other related forums and it's always the posts tagged with infidelity or about cheating that stick out to me and I remember them whenever I think about risking another relationship.

Despite knowing the source of all this, knowing about the subconscious blocks my brain has been creating, etc. I still find it almost impossible to overcome them. Whenever I meet or see a new person I'm attracted to. . . that attraction always fades. The longer I know a person the less attracted I am to them. Every time. It's like I'm always waiting to just find the one thing about them that I can identify as a Red Flag and use that as an excuse not to pursue any relationship. As the ultimate failsafe, the type of women I'd normally be attracted to, if I can't find anything wrong with them I tell myself that she wouldn't be interested in someone like me anyway.

I'm not sure if this will help but I really just need a bunch of other people to tell me how stupid I am being here as a way of maybe getting over this hurdle. Past experience indicates that Reddit is a good place to be told I am acting stupid! Please help me.
<bot>: After a cliche terrible end to a relationship I find myself unable to move forward with anyone else. I'm being stupid and I know it, please confirm my suspicions so I have an easier time getting over it.