He sounds pretty limited/immature sexually. It's sad....as if he can't handle intimacy and this is all he wants sexually.

If you want to continue to date him, you'll need to set and enforce limits with this guy or he will continue this behavior - just like a phsycially abusive man would. If he is doing what he wants sexually despite what you want....that's not OK. If he sees the masturbation as a problem, and wants to change - great. But he may not - and then you'll have a decision to make.

If you want to just be friends with him, he needs to knock it off in front of you or he will lose a caring friend.

Take care!! S