Weird sex dream about teacher.

Okay, a couple of nights ago I had very weird dream at first it was me talking to one of the guidance councilors at my school, then I randomly told him that I'm gay (I'm closeted in real life) then he started hugging and groping me till we had sex then I was suddenly crossdressing and asking him to have anal sex with me we did and in the dream I came, after that I woke up. What the hell was this dream about? Why did I dream of him? Can someone please interpret this dream for me please?