Is it normal to have your girlfriend talk "gay" dirty talk during sex?

I have a good relationship with my fiancé and I find her extremely attractive and love when she dresses in some lingerie. Over the last year, we’ve really started to open up because of some experiences. I’m not talking about swingers or orgies, but just crazy stuff we have done by ourselves or with others. Some might consider a bit to far over the line by normal standards. Its been really refreshing and its been kind of a catalyst for my fiancé and I to open up to each other a little bit more. One thing in particular came about 3 months ago. We had been out on a date night and had really good time and of course a lot of drinking was involved. When we got home the drinks continued but we did end up in the bed and it ended up being a night of working each other rather than just missionary sex. After I finished her, she reciprocated with a hand job for me (love those from her). But the alcohol had really taken a toll on me and it was kind of difficult for me to stay hard. She didn’t give up and was trying anything to keep me going. She started on some dirty talk and noticed that was working. She kept it up and kept getting progressively dirtier to keep me going. At some point she started to ask me questions and used words like “juicy” and “thick” and “pulsating”. I realized she was asking me if I wanted to have one a guy’s penis in my mouth. “Would I take one for her?”, “Imagine what cum tastes like”. I’ve never been attracted to a guy but I have to admit that the thought of having my fiancé think I might be a little bi (at that moment) or the thought of having her in the room watching and urging me on with someone else was really exciting. As soon as I finished, the excitement wore off and I have no desire to hear anymore of that kind of talk. Its happened a few more times since then and I question how far I would go if she really stepped it up a notch like had someone step into the room at the point where I’m really excited…what would I do? But no matter what I always lose interest as soon as I’m done. So my question is: Is it normal to kind of have these thoughts? Certainly when she talks about doing something to me or if she’s pretended to something with another woman, that sends me over the top, but this is different and I wondering if anyone else finds it exciting.