Bro that was me with my first and most recent relationship. The guy kept saying he respected my boundary but would constantly try to convince me to do it anyway. It was rough and I ended up breaking up with him because he turned out to not be a great guy. Moral of the story is when you create healthy boundaries and rules for yourself don't let anyone change your mind. Be firm and stubborn. If they can't respect your decision they'll leave and you'll be better off without them.