With sex you always get what you want
She wants to go out with her friends and also needs money to spend. Because no one wants to walk on the street without being able to buy everything they want. Or at least something else. These are things of youth and this girl is very young. Not so much that he doesn’t know that with sex he always gets what he wants. Even if it is from her stepfather, who at his age, can no longer deny his stepdaughter’s sexual impulses. So he has to give in every time she wants to give him a cock suck and he needs to penetrate her pussy like a street slut. He does what he has to do.