We did that together several times, and then he said how much he would like to stick his dick in my butt. Feeling suitably uninhibited I let him do that. I sat on his lap facing him and we gently fucked. It was so incredibly feeling his erect penis in my butt like that and so stimulating. It made my boner so rigid that it ached and was I surprised when I suddenly just spontaneously started ejaculating.
When it was over I could scarcely believe that I had just let another guy fuck me, but I found that exciting that guys could have sex both ways.
Since then, it has now been two months, and I have let him fuck me I don't know how many times, and now I'm beginning to wonder if I might not be gay because I'm so hooked on this.