<human>: Hi. 

We've been dating about a year. We were both seeing other people when we started dating. We agreed to a monogamous relationship, but I'm having trouble.

Again and again ( from experience, some ted talks I can't link, and and plenty of questions in this sub ) I'm reminded that true monogamy is a rare thing. How do I make this *not* affect my relationships? Especially when it seems everyone is doing it, all the time?

More specifically, I'm tempted on a daily basis because of the proximity of *so many people* who know damn well I have a GF. I also know damn well of many men who try to get *her* to cheat on me. 

It's awfully hard to trust when I know she's done it in the past, and I know how easy it is to get away with it from past experience of my own (as a cheater and cheated).

Condense the text into a few key points
<bot>: It's hard to trust when everyone seems to cheat. It's hard not to cheat when it seems it's everywhere.