No, no, stop please stop

I definitely think, girlfriend or not, you need to respect her wishes. Just because she's with you doesn't mean she's your property or no longer a human. If she says no, you need to give her space. If you want to reenact those kinds of scenes, you need to talk to her about it first, and set up a safe word. That way you can do those kinds of things, but she still feels safe that she can call it off and have her feelings respected. Relationships are about a mutual respect for each other as individuals and as human beings.