What does this mean???

I keep dreaming my bf is cheating on me, its the same in every dream. He cheats infront of me, i cry, he ignores and he leaves with the girl. I saw this dream 7 different times in 2 years and each time theres a different girl and a different scenario.

I've talked to him about it and at first he was so shocked and upset that i had such a dream, and then when it became frequent he started to get annoyed by them so i stopped telling him about it.

Im NOT insecure and i trust my bf 100%. We had our ups and downs but we never cheated.

Why am i seeing these dreams? Im gonna go insane!