Brosy said:
Yep, don't mug yourselves off, you shouldn't have to do a single favour for a girl to get sex, the more favours you do the more unlikely it gets in my experience.
If a girl asks you to do things, you should have a repertoire of cheeky responses along the lines of "do it your f!*king self princess".
Is merely yet another test.
One small favor is fine. Like getting her a glass of water. Then you should start asking her for favors. She only gets one small favor. If she oversteps her boundaries with a ridiculous request the above response might work, minus the word "princess".
Less angry responses:
"No."
"You have two feet and two legs."
"Get it yourself."
"You're closer. You go get it."
"You're not an invalid."
Another rule. NEVER let a woman "borrow" money. Especially if you're dating her. Women are forced to be more responsible when it comes to paying off a loan they signed a contract for with the bank. They tend to be irresponsible, especially if a male is the lender and especially if that male is interested in her sexually, whether she is dating him or not. In many cases she will use the fact that either they are dating or that he's interested in her as an easy out to avoid paying it back.