Whatever people want to do with their partners in the privacy of their own bedrooms is OK with me. But it sounds like you may be taking this too far. You said you have kids, and now your husband doesn't like what you are doing. Also, you have a broken rib from this, who knows what else could happen to you next time. A lot of guys don't know their own strength. Maybe you should see a therapist before this gets too out of hand, at least for the sake of your children. Just my .02, take care