[MMF] I’ve been playing with a man’s wife for about a year now..

So last year before craigslist personals went offline, I managed to get in touch with a MF couple in my city. Their ad stated they were looking for someone local for the wife to give a blowjob. Of course I was interested so I messaged them. The first time I went over to the couples home I was pretty nervous as I’ve never been with a man’s wife. As I walked in to the room she is laying on the bed naked and rubbing herself. She is a beautiful blonde with Her nipples pierced. I took my clothes off and climbed into the bed on my knees and she started sucking my dick. The whole time her husband is just sitting on the edge of the bed jerking off. I finished and the wife grabs my dick and finishes me off all over her tits. This happened last year and ever since then, they send me a text about once or twice a week asking if I would like to come over and get sucked off. I was just there yesterday. Sometimes the husband asks if I have a big load saved for his wife. I’m just wondering, is this normal? Are there other couples who do this? AMA