Well, that's obvious, and it's funny because I'm kinda reflecting on some shit in the same vein, but at the end of the day.....It's just not ever worth it. I've spent my share of time thinking about a chick who probably never let me cross her mind again. It's just easier to move on to the next one.
But I am a jaded cynic in some respects...Just let her get married....Find solace in the fact that it'll probably suck for both of them. No need to pull the strings.