I agree with spliff's comments, & also with those who remarked on rhythm. Also helpful, from a lady's perspective, is a guy's oral skills. Trust me, even if you do do happen to be on the small side, learn to do that one thing well & you'll have her wrapped around your little finger (ahem... didn't mean for that to be a pun, but it sort of works, lol). A gifted tongue can make a girl overlook a multitude of things.