First time Sucking off a guy

I got home early and the front door was locked. So I rang the door bell. My wife came to the door and told me that she had a boy friend there and wanted me to get lost. I pushed past her and went up stairs. There he lay on his back nude and hard , I was surprised because he was only about 4 inches long and only 1 and one quarter in diameter. Not very big. Her boy friends are usually large , 7 or 8 inches long and 2" diameter. So I smiled and asked if I could suck him off. Marilyn was surprised even though we had talked about me learning to be a cocksucker. She said nothing so I got down on the bed next to him and put my lips around the head of his cock. Being new to this I just went with what seemed natural, licking and sucking for about 5 or 6 minutes , until he shoot a cum load into my mouth , I loved the taste, and was really turned on. Then Marilyn got on the bed and started rubbing his balls. He got hard again within a couple of minutes. She got on all fours and stuck her pussy in his face. He got in position and I helped him push his little cock in to her ass. That was why she wanted him using her ass ,because he was small. He started fucking her really fast and Came again in just a few minutes.
Then I just left so she could enjoy her afternoon sex session.
Later that evening I got home and Marilyn was enjoying a bath. Marilyn told me we have a surprise for you tonight. So after dinner a girl friend of hers and her boyfriend showed up . Marilyn and Jill started kissing and taking off their clothes. Then jack kissed me and lead me up stairs. Jack pushed me down on the bed and lay on top of me, rubbing my body and french kissing me. He unzipped me and pulled my pants off and started sucking my cock. I was really enjoying getting a blow job when he got up and striped off except for the pink panties he was wearing. he laid down next to me and pushed my head down to his cock. I was sucking him off and loving it . Jack had a 7 inch cock and it was almost 2" diameter . Big. I made love to that cock until he filled my mouth with a load of cum that i could not get it all down , some just came out around my lips. I was licking the cum off his cock when i heard a click and there were the to girls Marilyn and Jill taking photos of my mouth full of dick and cum. Well Marilyn posted them on our web site and she now calls me her cocksucker.