Do Orlok and Ellen actually have sex?

The end of the first scene looks like the beginning of a rape/sex, and the last scene he drinks her blood, but did they actually ever have sex? It’s definitely implied but is it ever confirmed?

Also begs the question if Ellen’s dreams were just dreams or if they were actually having sex in some other realm.

I gotta ask because everyone’s talking about how this movie is about how horny Orlok is but it looked like he wanted to eat her.