Dream interpretation?

Alright, so heres the deal. Im in a fairly new relationship with an absolutely gorgeous angel. We are intending on marrying. For the first little while I was constantly dreaming about him, and they were awesome dreams. The kind that when you wake in the morning you want to cry because you cant fall back asleep and even if you did the dream wouldnt pick up where it left off. Well, over the last couple weeks or so I’ve been having dreams of infidelity. In the dream I completely acknowlege that im with him like for instance, I’ll say to the person im with in the dream “I cant cheat on*“ but then I always do. Im curious as to why im having these kinds of dreams and what it could mean considering that I speak with only one other male and he lives on the other side of the ocean and I have absolutely no romantic attraction to this friend whatsoever. I’ve always had really strange dreams but these tend to be reoccurring and its kind of tripping me out. The only thing that varies in the dreams is the locations and the person I cheat with (who are all unknown to me) any thoughts or theories?