My last relationship, and, coincidentally, the only other relationship i've ever been in, ended with my girlfriend cheating on me. She lied even after I found out, and more so, told me she still cared about me. Having the first ever relationship I was in end in such a painful way kinda scarred me.

I'm n a new relationship now, with a girl completely different from the first one. We're both in love with each other, and both want to spend the rest of our lives with one another. However, there is still that lingering thought of what my ex did to me in the back of my head. I get worried at times that my girlfriend, Amanda, might cheat on me. This is a ridiculous idea, and when i'm rational I can easily see this will never happen; however at times I believe the worst could happen.

Tonight is a perfect example. She talks to a friend of hers from last year named Matt. I've never met Matt (only seen pictures) and I don't know much about him. What I do know however is:

-At one point last year he wanted Amanda to participate in a threesome with his girlfriend and him.
-He continues to talk to Amanda, and say she's beautiful / hot etc...
-He "cheated" on his current girlfriend by fingering another girl (though, to his credit, he told his gf and she forgave him)
-He doesn't like having me brought up in conversation.

So, in actuality, I know there is nothing I need to worry about, yet, in at times I worry that he'll try to woe her, or that she'll get bored with me and want to try something new. Only time will tell what happens.