Hi What Height Where you at the age of 15?

I was the same height I am now--5'0". My boyfriend, on the other hand, was about 5'8" when he was 15, and he's now over six feet! It's really just genetic, I eat fairly well I hardly grew, he eats like crap and he's growing like a weed. He's 6'1" now with no signs of stopping...and he's nearly 18.