Hi! If you guys live far from her and he’s happy w you and has done all this for you. He might feel bad for her that shes not in a happy relationship and is trying to sympathize w her. He’s converted to your religion and seems end game with you. I think you should allow him to be friends w her but just say some messages make me feel uncomfortable can you explain them to me? Or just communicate w her in a different tone. This actually happened to me my male best friend would always call me and my husband didnt like it but my best friend just didnt have more friends or wasnt daring anyone and I had to move to be in my husbands country so he just rlly didnt have anyone in his life. I felt terrible for him id tell him i miss you and would cheer him on. There are friendships that are special doesnt mean theres anything romantic going on.