Without.

[Dude, you're not going to want to bang her all the time!]

I mean, it's just something to do together! I know enough to be a good teacher. [There does not need to be any paying forward in any respect, she's doing it because she wants to, after all. But ...]

You don't have to, of course.

[Now she can't help worrying that he's just humoring her likes because they've apparently decided to screw.]