Text to your wife if she curious how a MFM threesome would work/ start out.
"Honey, it starts out like when we were dating. After dinner or something, we'd get a room. We start making out, all the clothes come off and we got down to business. It's just this time it would be with another guy while I'm in the room. The two of you get started and I'll join in. Of course you'll know he's into you when his hard cock is waiting to get into your pussy".