their smile, how firm they could be, if their considerate, creative, they don't have to be nice nice (push over) but i like when i see they have a backbone. i like guys who don't wear oversized t-shirts, don't wear jordans with every outfit, don't wear basketball shorts whenever they go out, or sag their pants, wear their pants that are too tight or too big - i like guys who dress decent.
In my opinion, girls would go for looks first (eg. Abs, biceps, chest size, etc.) A brainless hulk isn't a good combo so knowledge is considered too.
To be honest, it is a combination of all 4 but each girl is unique. For example, I like guys who mentally challenge me in terms of knowledge and experience. That's what gets me going and motivated and stay in a relationship.
Be interesting and try not to bore your girl. The first paragraph should be able to answer all your questions about females attracted to males.
As a straight girl, I can say no. Unless you have experienced watching girl on girl porn. Then you might, might turn. Depends on the girl's determination and rationale.