When cornered, men will many times shut down. A real *problem* in communicating is to not leave open all channels, no matter how bizarre you think they may be. The emotion jealousy is given to us for both good and bad. The idea of a monogamous relationship is to secure it, and one way is to express silently that attitude, "No one's getting my guy." That is appropriate; it protects the relationship. When it gets extreme, as you are describing, it can ruin the effect it was designed to have; then it becomes possessive and controlling, underwhich no one wants to be.

Until there is evidence that there has been inappropriate conduct, you are loving him out of fear, and that is not love at all. Best to you.