Should I Fulfill My Husbands Biggest Fantasy

Alright, so my husband has this fantasy of watching me with another woman. He doesn’t want to touch her, so not exactly a threesome, he just loves the idea of me being pleasured by a woman and me pleasuring her as well while he watches and maybe fucks me from behind while I eat her out. We’re both in our early 20’s and have a very active sex life together. I’ve never been with a woman, and I do very much consider myself to be straight although I appreciate women’s bodies and have watched lesbian porn plenty of times and have always been curious about what it would feel like to be with another girl. I don’t know if we’ll ever make this fantasy a reality, but I am so turned on by the idea of him touching himself and watching me have sex with a woman that I kind of want to fulfill this fantasy someday. I don’t know how the situation would ever come about in real life, but if I ever meet a woman who wants to come home with me and let me fuck her while my husband watches, I’d definitely do it. Has anyone on here ever done anything like that? Did it end up hurting your marriage at all or was it all good sexy fun? I’m so curious! 😁 (I posted anonymously just because I’m awkward haha)