My first bisexual experience

Me and Christy had been together since high school and I was her first and after college we got married. Christy was a bbw with huge tits and our sex life was getting boring. My stepdad came to visit us after my mom died. Christy and him spent a great deal of time together while I was at work. One afternoon I left work early to surprise Christy. I walked in the house and it was quiet. I went upstairs to our room and I heard some moaning sounds. I walked in the bedroom and Christy was sucking my step dad’s cock. It was a huge cock way bigger than mine. She had his entire 8 1/2 inch thick veiny shaft all the way in her throat and she was bobbing up and down and she was a fabulous cock sucker. I had always been curious about cock and Christy knew that and she said come here and you try. My stepdad Brad said yeah bring that faggot mouth over here! Suck my cock! I crawled up on the bed and started stroking his fat shaft and then I put his fat cock head in my mouth and started moving my tongue around and I slowly sucked further down his shaft until I was all the way to his huge balls. He was moaning and holding my head and saying I was amazing and I must have sucked cock in the past but that was not the case. My own 6 inch dick was hard and Christy pulled off my shirt and undid my jeans and took my cock out of my underwear and she swallowed my cock into her mouth and I was thrusting my cock further in her throat! Brad said I want in your wife’s pussy! I said ok! He told her to sit her pussy on his face and she did and he dove his tongue right into her pussy and then a finger. He said holy fuck her pussy is tight and I’m going to love this and went back to tongue fucking my wifes tight pussy. I was still sucking his cock when he ordered her to get on all fours and she was to suck my cock while he fucked her. She told Brad to go slow only her husband has ever been in her. Brad mounted her from behind and put some spit on his hand and began pushing his fat cock in her pussy, he was  grunting and moaning and saying this is the best pussy I have ever had and I won’t be able to last long. Christy was in pain and he was pounding harder and deeper and grunting! Then he said I’m going to cum she stopped sucking and said pull out I don’t want to get pregnant  but he didn’t listen and he held her ass on his cock and pumped a huge load of cum in that beautiful little pussy! After he pulled out I went under her and she sucked me while we did 69 and I was eating the cum out of her pussy. It was delicious and my cock exploded in her mouth and she held my cock in her mouth until all the cum was swallowed. My stepdad came back in the room and said this is going to be a long night I want that pussy again. Christy started sucking him hard again. While she sucked him I spread his ass cheeks open and started licking his ass crack and tongue fucking his hole, he smelled sweaty and manly and I dove right into his hole just sucking and licking. He was really face fucking her good. He told her to lay down and he got on top of her and spread her legs apart and lined his cock up with her pussy opening and pushed into her, he was saying it is tight again you would never know I was in it already and he began thrusting hard in and out of her, he would pull out and pinch his cock head when he got close to cumming. Watching him impale her with his huge cock had me hard again and then I told him I wanted some pussy to and he said ok and I took his place and I pushed into her wet and hot pussy which felt a little bit wider but still tight. I knew I wouldn’t last long and Brad got up on the bed and put his cock in my face and he said you know what to do so as I fucked my wife I sucked my stepdad and took him in and out of my mouth and I sucked his huge balls and he began really fucking my face as he held my head on his cock and he grunted and said holy shit I’m cumming!!! He held my head in place and said swallow every fucking drop as his cock exploded in my mouth I could taste the cum and it felt never ending. He would grunt and more would come out and finally he pulled out of my mouth and he was exhausted. I came in my wife and I came hard I knew I had a lot of cum in me we hadn’t had sex in three months. My stepdad said Mark you have the perfect mouth and Christy you have the best pussy I have ever had. Well that experience opened our marriage up and we did regular threesomes and would swap with other couple. Her pussy stayed nice and tight!