I had acne as a teen. I'm 20 now. I don't actually remember getting acne or my first spot or anything but I do remember when I was about 15 that swiming lessons at school were the bain of my life since I had to have all my make-up washed off, and only had about 3mins to put it all back on again before my next lesson.
I don't have acne so much anymore but from time to time I do get spots and I would never say my skin is totally clear *sigh*. I'm hoping I'm still young enought to grow out of it!