Teenager lyrics

Teenager

For your birthday she sent you a card
She didn't sign her name she gave an autograph
Now she's trying to call your bluff
Is she your true love?
We knew the boy who went from Mod to Ted
She asked matter of fact had he gone off his head
He was uncomplaining as a tree
Not a thing like me
[ Lyrics from: http://www.lyricsmode.com/lyrics/c/camera_obscura/teenager.html ]
You're not a teenager
So don't act like one
Sure she's a heartbreaker
Does she have one?
Is it down to me, down to me we both rarely speak?
I went for a stroll after dark
I thought of you with her while staring at the black
I didn't have you down for being easily led
Or the girl well read
I went for a stroll after dark
I thought of you and her, I think I'm going mad
Can you help me to see where I'm going wrong?
Help me finish this song