My first unexpected encounter

Hi. Many years ago my wife at the time had a fantasy about watching a guy suck off another guy. She talked about it a few times. After a while I thought ok, make her happy so I agree to do what she wants to watch. A few weeks later she said I found a guy but he is completely straight! I said ok , how can I give him a complete bj when he won't agree?? She then said she had it figured out. She told guy she only wanted to give a bj, nothing else! But also said he must be tied up and blindfolded!! He said ok. She made the date, date arrived she invited him in. Tool him to the bedroom and tied his hands securely. She put headset on him a d then the blindfold. I was summoned in, and told without words to take off his pants. I did what I was told. I exposed semi hard 6in cock. She then told me to lick it, balls to tip. I did as told, then she told me to take it into my mouth. I did as I was told, I started sucking. His semi hard got hard, it grew to 8+. She was really enjoying the show. After about 20 min he said he has never been able to cum from a bj! He then said only way for him to cum was inside a pussy!! Wife then shook her head no, then a big smile came on her face. She then reached into night table drawer and pulled a bottle of lube out, she then tapped my ass with a huge smile! In the spirit of the moment I shrug ok. I was only wearing boxers so I slipped them off. She had me straddle him reverse cowgirl. She lubed his cock and my ass Crack. I slid up and down his cock many times, as I slid up his cock she sort of redirected it a bit up, it hit my ass hole and the head slid in. Soon as that happened she stopped me and had me go forward
bit so his cock was straight, the gentle push me down. I got about 1/2in and taking a bit more slowly. He then arched his hips a d drove fully in. 4+ in 1 push no warning. I thought he was way to deep. Wife was smiles all the time. She then started to pull me up to a bit over half then pushed me back down. I got the jist , she wanted me to fuck his cock with my ass. I went up part way and he started thrusting. I let him do that then I fell on his cock driving it all the way inside. Then I did same again. After about 15 minutes he said he was going to cum. She pushed me back down hard, I took his load deep inside (bareback) . I pumped a bunch more before he went soft. Wife cleaned him up, untie him. He said she had the tightest pussy he has ever had. When he left we had the best sex. Since then she has invited other guys to have me blow or get fucked by.