Also, you keep hinting at the mc perhaps getting off to his wife getting impregnated b6 someone else, not sure your position on that, but personally i think in the fuutre if you do include pregnancy, id like for it to be optional, like you can either impregnate your wife and then have her tease you more about her getting knocked up by another but you knowmits yours, or you can have her actually get knocked up.
Also I know this is about sharing your wife, but will others share their wife's with you ?