Originally Posted by ItWasMe

Funny. In this Cosmo article, written by a guy I think, which came up on Yahoo's front page today,

Dating 101: Why Guys Dump Girls They Dig -- Yahoo! Personals

It says:

"Single men are natural-born one-uppers. If there's a possibility of upgrading what we already have for something better (that'll make our friends drool), we say, bring it on! So we wind up always wondering if you're really as good as it gets. (I know, scumbag mentality.) "Whenever I meet a new attractive woman, I consider what it would be like to date her, even if I have a girlfriend at the time," says Andy, 30. "The grass is always greener. No matter how great his current girl is, a guy doesn't want to feel like he's missing out."

In addition to our opportunistic tendencies, most guys feel compelled to put as many relationship conquests under their belts as possible. "I admit it -- I know the exact number of girls I've dated, no mental calculation required," says Dan, 29. "That's how aware I am of how many notches I have. And I'd never commit until I felt like I'd experienced enough different women." Every guy's definition of enough is different, so there's a chance he wrote you off just because you didn't come late enough on his own personal hit list. The moral of the story: Until we grow up, mark everything off our checklists or have too many friends convince us that we can't do better than you, the flight risk is real."