In which case, you might be in luck, because the nice guy you claim to want has, in reality, shed his nice guy mantle and is out there looking to unleash his cynicism and resentment onto someone just like you.
Yeah. On Craig's List.
I happen to be one of those "nice guys" who holds the door, cooks dinner, and buys that Christmas gift etc. etc. and I married a woman way out of my league. Here's a hint: If women aren't interested in you because you're such a nice guy, it's not actually because you're a nice guy.