This was how my first mmf happened. It was at a casino. I was doing the wifey doggy while the hubby was eating her. The wifey asked the hubby to get my cock 'lubed' so he began sucking my cock. I came...ooppss..lol
You MUST do this - it is amazing ! I had the pleasure of the opposite, I got to eat the guys wife while he fucked her and she came,,, but - I wish I could have had his cum... I was fortunate enough to see him fuck my wife for 45 mins,, but her never came,,, he was on Viagra,, the next opportunity - I will have their cum... my wife or yours!