Are you worried about there not being enough boundaries? You've told him now that "I can't talk about sex because that means I want to %#@&#! you" so now especially you need very strong boundaries so that those feelings are successfully contained within a secure frame. It sounds like you see giving your T a CD as loosening a boundary, and this is especially scary given your "sex" comment last time. Interesting. What will you do? Maybe now is not the time for a CD, if it feels like loosening of boundaries to you and is threatening. Instead, maybe you should just focus on the sex stuff in session.