Hi Jonny, thanks for the question.
We’re strictly monogamous. I understand it as a fantasy but the few real life examples of that kind of thing I’ve known about have ended disastrously for all involved.
There’s quite enough fun in this for the two of us, and we love using the strap on and dildos to indulge that kind of thing, bigger cock, him not feeling it, etc – but no, just us and that’s all it’ll ever be.