sex & confusion

Date: 1/4/2017

I am a straight Trans male & had a dream the other night that I was having sex with another man. & I wasn't sure what I was completely doing. It scared me well because men scare me all together. I remember being in the bathroom & we just went at it. I remember in my dream I told my girlfriend what happened & she told me it was her & I never . When I look in the mirror I saw the guy . It was me. I was the guy I was just seeing it through my girlfriend perspective. Idk how to feel or what it means