Is it normal for a teenager to have adult friends?
I'm eighteen, but throughout my teens I've had more adult friends (usually in their 20's) than ones my age. I've just always connected with them better. For example, there was a young wife/mom who often sat next to me in driver's ed (she never got around to taking it in her teens). We'd also talk and stuff after class.
I find it easier to befriend them and keep conversations interesting, while I scramble to think of things to say to others my age.
I would never date someone much older than me, though. Gross.
(Some of you may be thinking that any adult that hangs out with young teenagers is a creep, but it's not like that. I mean that whenever I'd see those people, we'd hang out and talk and have a lot of things in common, but they wouldn't come over to my house or whatever. Their other friends were adults.)