Normally bedding was taken downstairs by wife on her way out but this Friday I said I would take it later hoping Margaret would come looking for it.I ...ad everything set up I had a porn VHS video on tv and headphones plugged in giving impression I couldn't hear anyone coming into bedroom.I had headphones on but sound on video turned off TV faced the door and I was sideways on cock in hand looking at TV. I could see reflection on TV screen of the bedroom door so I would see when I was walked in. As I rose to take him I whispered:"You can't cum inside, this is my fertile time." Which I believe only got him hotter. Bob imbedded himself balls deep with one very hard stroke. We sat there for a while just kissing as he made small thrusts, and I mean small, maybe 1/2 and inch. I was totally honest when I whispered:"Your cock is so hard, it's putting so much pressure on one spot." Usually when a cock goes in, it goes behind deeper towards the back before sliding upwards. Bob just went. "He chuckled telling me I was welcome."The only thing is sometimes I think she needs a bit more." Like what?" Like having another man come over and help out. Help her out." I said awkwardly.He chuckled and said that once he had made a pass at her and she had turned it down. "So you want to see a bull take care of your wife? That sort of party could be arranged but I want you to really think it through. Things can change. But if you want that sort of party I can arranged it. But do you think. ...As I stood there staring at the door wide open, my head saying for me just to walk away but my hard cock saying something else entirely, I then started to walk towards the door, as if in a trance, my heart going like the clappers, butterflies like you wouldn't believe and a hard on to match. As I got to the door there was David standing in the hall, he invited me in and in I went, he showed me into their living room and told me to take a seat, I did so on the 2 seater couch as Simon came.