My wife (28F) wants to fuck another man

My wife (28F) and I (31M) got married at a young age and were each other‘s firsts. A while ago, we had a few drinks and the topic shifted to sex and fantasies. She slowly confessed that she‘s becoming more and more interested what another guy would feel like, since she‘s only been with me. She also admitted that her friends talk a lot about sex and she has the feeling she might be missing out on something, especially regarding size and stamina.

I‘d be lying if I said that I wasn‘t at least a bit shocked, but I was also turned on. Later we started roleplaying and she made me watch her fuck herself with her dildo, while she acted like it was another guy taking her. We‘ve done this multiple times and she is being serious about wanting the real thing. Would love to also hear some female perspective on this topic.