Pleasure filming

So my boy friend wants to film us having sex and ora sex which I truly find hot and want to do. My thing is I don't trust anyone to have that of me. I've been traumatized by. Few of my girl friends who have had there exs release those videos and they never forgave themselves. You ever know what the future holds and I'm scared for someone to have that of me. How do I tel him in a nice way I want to an I'm so down but no because I'm scared not because I don't trust him but of the situation it would put me in. I'd do this with my husband if I were married but not my boy friend.