My wife and I had been married about a year and few months and I thought I wanted to watch her have sex with someone else. I talked with her about it and she wasn't interested. My lifelong best friend and I talked about it and he agreed to have a hangout get wives drunk and see if we could switch wives for the night. That night things started as planned but the wives resisted any move we made for sex with each other's wife. We had been parking with my friend before with each couple fucking in front seat and other the back seat. My wife started giving me a blow job so I settled for that. My wife started moving different so I opened my eyes a saw my friend fucking her from behind. It didn't take long for the 3 of us to cum. His wife got pissed off and went in her bedroom. My friend flagged me and told me to go give it a try. She let me fondle her a short time then told me to get out. I left the bedroom and found my wife on the floor with her legs over his shoulders. He was hammering her pussy. He finally cum inside her again. We got dressed and went to our apartment. the next day (Sunday) my friend showed up and said his wife kicked him out. I agreed he could stay till she would let him return. We both fucked my wife most of the day till she said she needed a break. She wasn't on birth control and we were lucky she didn't get pregnant. She got on birth control the next week. As days passed I noticed my wife acting differently. My wife was washing the bed sheets several times a week. I asked her was my friend coming by. She said he came every day on lunch break and usually fucked. I got angry but she told me I started this and I would be the one to stop it not her. My friend got back with his wife so things cooled down. My advise is be carefull about this lifestyle.