So mad!!

Last night my boyfriend of three years tells me that one of his friends that goes to the gym spoke to one of my friends and she told him that I was tired of my SO and I'm going to break up with him!!  So he asked if it was true and it is not only I've said is I get tired of him being so insecure about our relationship. The person his friend describes sounds like no one I hang out with or talk too and he would not give my SO a name..  I feel like maybe he just wants to see my SO with someone else so maybe he is trying to break us up any thoughts??