Like Simo said, if you act normal about it and not seem desperate, it will annoy the hell out of her. My last girlfriend was a total money drain, whenever we went out she kept ordering the most expensive shit and so on...When we broke up, she said I don't meet her needs financially...I was about to burst out saying "FUCK YOU WHOR YOU DRAIN ALL OF MY $$" but calmly said "It's okay, you don't meet my needs sexually"...ohhh that pissed her off soooo much.

This is also why I am single and probably will stay single (sex yes, commitment no).