There's a guy eating donuts watching my mother, and turns out it's my boyfriend. What should I do?

There's a guy that has been eating donuts watching my mother for some time now, like a year. He comes to my house every morning with his box of doughnuts, and he just sits there, staring. I did some investigating, and I found that it was my boyfriend. One day, I came to join him on my roof, and he wouldn't share his doughnuts with me. I went to my Therapist about it and all she said was: "And how does this make you feel?" I can't believe that!! The doughtnuts were chocolate, my favorite!! How could he do this to me? Should I dump him or should I stay with him and find my own dougnuts? Please help?!