We were younger than I should say, but the hormones were raging. We enjoyed looking at porn together which one day led to jerking-off together. That led to the day when he said, "You can touch mine if I can touch yours." After several very hot sessions of mutual masturbation, he asked, "Can I try going down on you?"
I was all for it. I was my first official bj and it felt glorious. A few days later, I returned the favor and discovered that having a cock cum in my (and loving it) didn't diminish my interest in girls one tiny bit. I still love pussy, but I've been a cocksucker ever since!