My First Time

I was twelve the first time I bottomed. The boy I bottomed for was fifteen and his was noticeably larger than mine, yet outside of what I can only describe as just some mild discomfort when he penetrated into me there was no pain as I had often heard about.
He jumped into he gently and ejaculated and pulled out. I rolled on my back and he sucked me off all the way to a dry orgasm. It was the one and only time he and I had sex.
I was almost fourteen when I bottomed for another boy my own age, his was identical to mine yet it hurt like all hell when he slipped is in and penetrated me. So much so that I just kept telling him to hurry and cum. He ejaculated and pulled out. I was not in the mood to get sucked off afterwards since I had lost my erection. He left before my mom returned home.
It always bothered me why my first and second were so different. Since then it always hurt to bottom.