That is hot. I would never allow it, but the thought of my wife getting pregnant with her lovers baby is such a turn on. There was one occasion when learned that my wife and her boyfriend were discussing having a baby together. She admitted it whilst we were fucking in our bed and I felt such a sudden surge in my loins, I literally exploded into her pussy. It was instant and incredible, something I've never experienced before.
Afterwards, when sanity returned, we discussed it further and she agreed that it shouldn't happen. But, even now, years later, I still get off on the thought of it. My wife actually considered having her lovers baby.
