My childhood friend, who I've been with since we were little, is a girl, but she's like a guy friend to me. When I look closely, she's beautiful and cute, but I've never thought of her as a woman. When I lost a game, I had to play a nipple touching endurance game as a penalty, and unexpectedly, she climaxed just from her nipples! Seeing my childhood friend's female face made me excited and feel strange, and I wanted to stick my dick in her. We escalated more and more, and our instincts won over our reason, and we had sex every day after that, and it felt amazing!