Not my first time, but early on

I spent my summers with my grandparents as my parents worked and did not want me unsupervised all day. When I was 9 Grandma went on a trip with her sisters so it was just grandpa and me. I woke up and went to the family room to watch tv. On the coffee table was a gay porn magazine. I had already sucked a few boys off and played with men too, so I was very turned on. I realized grandpa likes gay porn. I was looking thru the pages and rubbing my tiny cock and got hard, my grandpa came into the room and he said I am so sorry I left that out, do you like what you see, I told him yes and he sat down next to me and took over rubbing me, after a while, he opened his robe and was naked his cock was hard and he asked me to stroke him. when his cock was so wet with precum and he got off the couch and sucked my little dick when I had a dry orgasm, he asked if I would do the same for him. I sucked him to orgasm and was going to spit it out he kissed me until we both drank all of his load. later we played again and grandpa told me that when he met grandma he was in the closet and trying to live under the radar. He worked in an office and one of the ladies in the secretaries was rumored to be a lesbian and was spurned by the other women because she was outed by a woman who said grandma had come on to her. Grandpa knew he could help her out and keep himself off the radar. He asked her out and said I understand you have rumors about you and I propose we go out to stop the rumors you see I am gay, if we date and then get married we will both have proof we are not gay. After being married they decided to try to have a baby which would better prove they were straight. After having sex many times to get pregnant they decided they liked bisexuality. It got me excited that not only grandpa would understand and love me being gay but grandma would also still love me too even if I got outed. Grandpa and I continued to play every day and one evening he said some of his friends were coming to have a sex party, and I was welcome if I wanted to join. I chose to join and I was so excited to see all the men sucking and fucking each other. I had been told all gay men were either top or bottom, but you guys are doing it both ways. The men laughed and said we are versatile meaning we like fucking and being fucked. I liked this and I said my dick is too small but when I get older I would like fuck as well. All the men said I could fuck them anytime. I liked that grandpa had a party every week and I joined. When grandpa noticed I was sad he said what's wrong Well grandma is coming home and we won't be able to play as we have. He said don't worry she knows what has been going on and can't wait to watch us while she masturbates. I was so turned on you mean I get to see a real pussy. He just laughed and said yes. The next day I was sucking grandpa's cock and I heard the door open and the men came over often so I was not alarmed. When I felt a guy rimming my ass and the side his cock in me I continued to suck grandpa's cock and the man slide his face next to mine and he took grandpa cock and started to deep through him as my eyes focused on his face I saw dad sucking his dads cock. What a surprise. Wow, dad I never even considered you did this too. The next day grandma came home and dad grandpa and I drove to the airport to pick her up. Once home the 3 of us had sex while grandma masturbated, then dad fucked her and he told me to lick her pussy clean of his cum. I could not believe it I was seeing my first real pussy and not I was eating cum from her pussy, when I finished grandpa fucked her and I ate her again.