I don't know if it's just my wife and I, but we have a couple we play with, in which the husband is quite generous (in our opinion) whenever it comes to the sex. We'll just call them Mr.Giles and Mrs.Giles.
Sometimes wife and I play with them at a hotel/motel, but most of the time they invite us over to their place to play. Whenever we go to their place, wife and I get warm welcomes, couple drinks, light snacks, and we start chatting about life. You know, the typical "How's life? How's work? How are the kids? What you guys been up to lately?" etc. Now obviously their kids are not home, otherwise we would've got a hotel/motel room. After a bit of chatting, drinking, and laughing with each other, we finally get to having sex with the Giles.
Almost every time wife and I get with them, it's going to be same room swapping. Of course, my wife and Mr.Giles have sex, and I have sex with Mrs.Giles, all in the same room. Between us four, the sex usually lasts between 40 minutes to 1 hour, and it's always enjoyable for everyone. Once we get closer to the end of the sex, Mr.Giles always offered my wife and I to do Double Vaginal, as a way to thank us for coming over to their place. My wife and I would never refuse such an offer, and get on with Double Vaginal.
Mr.Giles always suggest that I lay down, have my wife on top of me, and he'll get behind my wife and on top of both of us, sandwiching my wife. Once we get into position, Mr.Giles would tell us not to do anything and that he will do all the work, so wife and I just relax. While I'm inside my wife, I can feel Mr.Giles thrusting into her, sliding in and out. I have to be honest, it felt really good, and I'm pretty sure my wife loves it too. Mr.Giles, while thrusting, would always check on us on how we're feeling, and I mean both of us. Things he would ask us are like "How's that feel? Feel good?", "You guys okay if I do it harder?", or "Is it too much? Let me know if it's too much, I'll slow down". While I'm on bottom, I always feel the urge to thrust up into my wife with Mr.Giles rhythm. But when I do thrust upwards, I start to edge quickly, and Mr.Giles always have to tell me "No no, don't thrust. Don't thrust. I got you" to which I oblige. When Mr.Giles thrusts harder, the intensity increases for me and my wife. Sometimes Mr.Giles' thrusts can edge me pretty quick as well, so I always let him know with something like "Ugh... Bud, too much... Too much... Easy... Easy...", and he slows down for me. After the edge dies down, he asks if wife and I are ready to continue, we say yes, and we continue. Pretty much the goal was for all three of us to cum together at the same time, which is pretty difficult to achieve in general. Finally, Mr.Giles, my wife, and I manage to cum together as close to the same time as possible.
Once we finish with the sex, we all clean up, my wife and I say our goodnights to them, and we head home.