Why is all the girls i date seem to treat me more like a boy toy, and less like a bf?

they want me to bend over backwards financially and emotionally, with all the little sweet things inbetween, but then are all so rude and disrespectful, ungrateful, and seem to always convey the feelings that this isn't gonna work out, and these are the girls I pick to date, so apparently I've got a pattern, how do I get over it and why do I have it? *oh i don't like at all how rude and bitchy they are either, it gets me pretty annoyed*