Felt like adding my own say in this although I share the views that has been already expressed in this thread.

The guy was in this just for himself, that much one can see. Did he care about you? On some level he probably did but it was still mainly about him and himself with you more or less as an afterthought. Part of the whole domination/submissive aspect that I find so appealing is being able to delight and please the submissive partner, from that I get much of the satisfaction of the act knowing I could bring out such a sensation from my companion. Sure it is about getting sexual fulfillment for oneself too but it is a give and take situation to ensure both get exactly what they want and need.

Did he cross a line? Yes. It might be different if you liked how he was acting but since you did not and try to tell him so and the fact he dismissed it all shows he was at fault.

In such relationships the dominating member is often held responsible for the submissive partner in my view if nothing else since quite a few submissive people will be relying on the dominant member to act in the best interest of both.

When it is said and done you did the right thing even though it might have been hard, if nothing else you know you have friends here from the looks of things and hey no doubt a good caring Master shall step in, if not already did so.