My wife and I recently celebrated our 2-year wedding anniversary by booking a fancy hotel room in Manhattan. Our sex life has been kind of vanilla for a while, so we agreed on a specific sex fantasy -- I would play the role of a former boyfriend who she ran into at a work conference and she would decide to bring him back to her hotel room for "illicit" sex.
So after we checked in, I left the hotel and walked around a while while she prettied up and went to the bar. I got to the hotel bar at appointed time, pretended I was "Adam" and started to chat her up. We finished a couple of drinks, and when the sexual tension was right we went back up to the room -- making out in the elevator like a couple of teenagers.
This is where things started to get a little weird -- my wife had very specific things she wanted "Adam" to do like he used to. These are things she has never asked me to do. Lick and finger her asshole. Throat-fuck her. Cum in her mouth so she could swallow it. But I was into it and it was hot.
Then it got weirder. Between sessions, she started talking about how much she enjoyed getting fucked by a "real man" again. How it had been so long since she could enjoy a "real man's cock" insider her. I didn't want to break the fantasy so I played along. I tried not to denigrate her husband (i.e., me) but at one point I said, "Yeah, I bet it gets old having a limp dick for a husband." And then she said, "You don't know the half of it."
You would think that I immediately would have lost all desire for sex for the rest of the weekend. But to my surprise it got even hotter. Normally she is a "one and done" kind of girl but I think we fucked probably 7 times over 3 days/2 nights.
Now we are back home and of course "Adam" didn't make the return trip with us. And I don't know what to do -- do I take what she was saying seriously? Honestly it was kind of the best sex we've ever had, and I don't want to ruin any chances of it happening again if we can ever get away. But now I have all these insecurities/worries about our regular "vanilla" sex.
TL/DR: During hot sex fantasy weekend, wife reveals she is disappointed in my past sexual performance (and maybe more).
Any advice?