jealousy issues dream

In the past two nights I had a dream about my fiance's ex-fiance. I dreampt that she came back into his life and they started to hang out again as friends. I left him because of it and this did not phase him. When my fiance and I started dating three years ago, I had this dream (or variations of it) all the time. It has been two years since I had a dream like this until now. Does this mean that she is going to come back into his life; or that she already has and I dont know about it?
I have jealousy issues and just the idea of them talking and hanging out makes my stomach turn.