Anyone know anything about interpreting dreams?

Since I started dating my boyfriend, I've had dreams about being sexually harassed by every one of my exes. Each dream highlighted an individual ex, with whom I somehow ended up alone with, and then the ex would start kissing/touching me or whatever and I would feel uncomfortable but not do anything to stop it, and then I would remember that I have a boyfriend and I would start trying to stop the ex and in a couple of them my boyfriend actually showed up to "save" me. 

I've so far dreamt about every single ex of mine in some form of this scenario. I always wake up confused and shaken. 

Any ideas on why i keep having these dreams??