Yes when you look in her eyes she feels that ownership and the belonging to you. Turns her on so, that sometimes they forget the husband is in the room. The husband becomes aroused by such they themselves feel the power of the man in his bed. That very point when the husband some times become vulnerable and falls out of character ( not all do) that's the big power trip for me.
Amazing, man. I've been there watching my gf get blacked, so I know exactly what you mean. I actually love it when she forgets I'm there, whether it's for a moment or longer. It does make me hard and realize she's totally owned -- and I love it that the black guy wins and gets the success he deserves. Being in my place in my bed means that he owns her, but he also owns me.
I often become vulnerable and fall out of character -- I feel it and I also want it to be THE power trip for the black man. I know he wants my gf's tight pink pussy, but I also know he's performing for me and letting me know how fucking superior he is. Seems like at that point his passion and intensity increases and he fucks her even harder.