Last night, I dreamt about seeing my ex and woke up to my gf giving me head

Last night I dreamt my insanely hot (crazy) exgf got a job at the coffee shop I work at. Irl, she messages me occasionally to tell me things like her dreams about me in some ploy to get me back I assume. I never answer her. Anyways in the dream she was desperate for my attention and actively trying to break my gf and I up. She would dress super slutty and corner me in the back. In the dream, she cornered me and began to undo my pants. Against my will, she started blowing me. At this point I was waking up and realized I really was getting head, but it was my gf and she had never done this before. I was instantly close and finished really fast. Should I tell her?