Can I give you relationship advice? I feel like I'm making some real progress with this shit these days. I'm with jh1. It's not worth wasting time when it's fun and exciting to be finding something else, and more to the point, is what you really want. I wasted time on certain girls and wish I hadn't in retrospect. I guess I figured why worry when I have lots of time and am pretty much content now. Mostly I was just like YES THIS GIRL IS HOT and didn't really care about much else. But man, once you hit a happier state, it's like why the fuck didn't I gun for this earlier? You have to know this so I'm probably preaching to the choir.
Plus, when you're with a really good one, passing on the other tempting shit is doable. If I were you I'd be in all sorts of trouble and just not being a nice guy. So I really don't know how you are doing it - I need to really care about someone.