It's happened a few times to me already:

I'm on a date with a girl. I try to escalate (kiss her, sexual touching, etc.), but she stops me.

We then talk, do something different, and suddenly the girl asks:

"You're not gonna get angry because I rejected you?"

wat.

I usually say something like "Of course not, we don't have to do anything you don't feel comfortable with". Without a sign of dissapointment or anger.

Dude, like what guy gets angry towards a girl becuase she rejected him?

The girls seem surprised, but definitely not more attracted..

I think my non-angry behavior maybe makes me too much of a nice guy? Like the girls often talk about how other guys are so aggressive with sex, etc.

So this is what 'being a jerk' is all about?