We've been friends forever, does he like me more than just a friend?

We've been friends forever, does he like me more than just a friend?

Our families have known each other since before I was born. His sister is my best friend and he has always been a really good friend too. I really like him and I think he might like me as more than just a friend but i'm not sure. Is it just wishful thinking or is it real? He is 4 1/2 years older than me. I'm 17, he's 21.He always makes me laugh, is very nice to me, and when we play games he always tries to be on my team. He lets me drive his car and one time we went out alone together and he taught me how to make the car slide on ice and snow. We talk a lot. So what's your opinion? Does he like me? How do I let him know I like him? I'm really shy about that kind of stuff.