Personally speaking, I've never had a girlfriend in my twenty-one years on this planet. The closest I've ever come was a lM relationship. But that's not the topic, so let's move on...
I've never really been big on T&A. The girls I've been attracted to varied in shape. There are three characteristics which I find attractive:
1. I'm a sucker for a smile. If a girl combines that with flirtatious eye contact, it'll be a while before I get her off my mind.
2. I'm not going to lie and say physhical attraction doesn't play a part, it's a bit of a wildcard, though. Long story short: I don't just analyze the entire package, but how well it's assembled (for lack of a better term).
3. Physical attraction draws me to women, but it's their personality which keeps me interested. She doesn't have to make me laugh constantly or fill every minute with conversation; she just has to be comfortable enough to be her down-to-earth self. Oh, and she also has to enjoy my cooking. Every so often, she'll have to put up with me pampering her. If she likes poetry, that's a plus.
I think I'll end this rant now. I'm not thinking as clearly as I'd like to be...