My Girl is Growing Up

My oldest daughter is 15. She will be 16 in December. Now all of the sudden there's a boy. I call him "9:30". The reason I call him "9:30" is because that is when he likes to show up here. She says he has hockey and baseball and works. I say that is too late to be showing up. She says it is summertime. I say I have to work for a living and that's too late! He is going into 11th grade and she is going in 10th. He drives. I have heard they're "going out". I am having a hard time with all of this. It's so hard when they grow up. It's very scary as a parent. There is so much going on out there these days and I am hoping that I have taught her well. To top it off, my next daughter is 14 so all this fun will be happening with her soon, too. Wish me luck getting through this!