PJ is extremely possessive of me. He follows me EVERYWHERE I go. When my fiancee kisses me or reaches down to me if I'm sitting on the couch he growls. The growling is very worrisome because it sounds like he is going to attack him even though I know he won't. He also places himself between my fiancee and I whenever we go to bed. I think he is this way because I was the only one at the shelter who saved him. How do I break him of this possessive behavior?