My pregnant wife (F28) wants to fuck a big cock for the first time

My wife (F28) and I (M31) 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 sexual fantasies. She slowly confessed that she‘s becoming more and more interested what it would be like to fuck a big dick, since she‘s only ever 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 since I‘m rather average down there and don‘t have a lot of stamina.

I‘d be lying if I said that I wasn‘t at least a bit shocked, but I was also very turned on. Later we started roleplaying and she made me watch her fuck herself with her bigger dildo, while she acted like it was another man taking her. We‘ve done this multiple times and she is being serious about wanting the real thing. Now that she‘s pregnant again, her horniness seems to be through the roof and she really wants to go through with this.

I would love to also hear some female perspectives and experiences on this fantasy.