So you have doubts or difficulties about how to handle this mind set? I am intentionally not writing "to control", for this would imply the possibility of ... what? To lose it?
No, I presume that you have the urge this fantasy to be ful(l)filled, not to become reality. Sounds like hair-splitting, but bear with me: I'm mostly with leo9 on this. Just because it is your fantasy and you are thrilled by the thought of it, it doesn't mean you are thrilled by the actual action (the non-consensual, that is).
Back to understanding that mind set: It may be unsatisfying, but it is not so much a question of understanding then of accepting. Why does someone like Coca-Cola, but not Pepsi?
Maybe this fantasy is a valve for aggressions, for all the shit that happens to us every day, but this thought is better thought by psychologists