When we started into all this the first times were awkward and weird. We'd chit chat, have a drink or two, 3 for her ...then he would fuck her over the back of the couch. Lasted maybe 3 minutes, he'd leave. First time wife cried, apologized over and over. We had some good sex next day. About 4 month after we did it again, same remorse but we had great sex that night. We did it like that at least 5 more times, got more comfy each time. She was HORNY after he'd leave. One night he did her on the couch, he got dressed to split, she says why dosent stay for a few. I'm like WTF? She suggests we all go up to our bedroom. I got naked and did her while he watched. She looked at me saying she could go again(with him).
We gradually worked up to twice each. One night she's walking him to the door, they did it again on the couch while I was upstairs waiting in our bed. That became our routine for many visits.
One night they're supposed be in the living room but she brought him back into our bedroom. She likes me watching. I like to watch. He's good with it.
It's obvious my wife gets really turned on with the whole thing, she looks at (who isn't doing her), loves to kiss who isn't doing her. Then we swap. She gets really into it and that's why it's fun for us.
Him or I have no problem with a FIRM dick.
I wouldn't be good with her doing this without me. We've never talked about other set ups and I hope she never does.