With me being sexually inexperienced (I was a virgin), she gently guided my mouth between her legs to clean up the first time, and after that, I was only too eager to go down on her. She didn't take birth control, and I always made sure to clean her up afterwards.
It was the first time I'd been kissed, and it was the most erotic thing I'd ever experienced. On our first date, she went down on me, made me cum, then, without swallowing, kissed me immediately. Since my first girlfriend introduced me to it, I've imprinted on it, and I've loved it ever since.