I just read a couple of your other posts. If I'm correct it sounds like your bf has DID. If so, is he sure that all parts are in agreement with this addition to his sex life? Most importantly, if sexual trauma is part of his history, was this sort of penetration ever a part of his trauma? If so....I would tread very carefully in this area. For instance, depending on his level of ability to do so, he may want to have a meeting with his system to obtain the group's consent. He might also want to talk to his therapist.

If there is no sexual trauma in his history, it's not as big a deal. Although any time someone with a trauma history is asking to be sexually "submissive" - it sets off alarm bells for me. Makes me think of retraumatization. Of course, I'm WAY overprotective!

Slippers