That can happen after a certain event with him, once that event triggers you can start using sexual favors. Though each time he asks for more, so first it's nipple play, then HandJob (BJ not in yet), so far those are only options. If you fail after that it's game over. Frankly, I think there should be a lot more, like Blowjob, Fingering, Anal Fingering, things like that. I know you have to render all that, but starting from when you can do it there should be enough to cover each week as it gets progressively worse (or better depending on how you're playing).