This one made me think. I guess in my situation she's under mind control...but more from her own doing than mine. I can hurt her (nipples usually) quite severely and all she has to do is say "stop" to make it end. But she never does. Likewise I derive a certain pleasure from the way she tears me up with her long nails. It's painful at the time, but the next day I'll twist or move in a way that irritates one of the scratches on my ass, back or nuts and that twinge of pain is kind of a turn on because I think about how it got there.

I could never engage in play with someone that is unwilling. I much prefer an enthusiastic participant.