First Time Sub

I am a "straight" 30 yo MWM that has had a fantasy of being dominated by an older man. I am generally not attracted to other men, but there is something about being put into my place and used by an older man that is a turn-on. One day, I see an ad for an older dom man seeking a sub. I reply, letting him know I was new to male play and was married. He thought that was very, and he wanted to turn me into his sub boy. I go over to his house and he has me strip before I enter. He has me get on my hands and knees and crawl into the house and meet him at his recliner, where he starts to train my mouth. I start to suck his big, limp cock and lick his balls until he gets nice and hard. Then he grabs my hair and has me make eye contact with him as his cock in is in my mouth. He tells me to stand up, proceed to the bedroom, and have my ass hang off the bed. He lubes up my very tight hole and his 7" cut cock and works himself in me. He tells me that I'm the tightest he has had and needs to break me in to fit his cock. He works my ass for a good 15-20 mins. I feel him start to stiffen, moan, and he tells me to take his load as he breeds me. He has me get up, get dressed, and tells me to go back to my wife with his load inside me.