I'm not possessive, I'm caring... Once you realize a person doesn't want that much care, you automatically back off.
Understand that sexuality is as wide as the sea. Understand that your morality is not law. Understand that we are you. Understand that if we decide to have sex whether safe, safer, or unsafe, it is our decision and you have no rights in our lovemaking.
Even in comedies, you've got to feel safe for things to just happen in a way that is natural and free, and recognizable as human.