Hey, I had almost that exact same conversation. Except it was breakfast, post-sex, and I was telling her about how much money she was costing me. Free rent, free food, I was spending a fortune on condoms and booze, and on top of it, she made me take her to this restaurant called Cafe Boa which was $72 for the two of us. Then to a movie, then to coffee, then to get drinks. While game 7 of the Suns and the Lakers was playing, which she forced me to miss. Her exact words were "I'll call up some other guy. I know tons of guys who would love to take me out." So, over breakfast, I told her she was costing me too much money. When I came home from work that day, she was gone. It was pretty neat.