You weren't invited to be here
Haven't you looked in the mirror?
Time after time you've been in the way
Somebody told you I liked you
Maybe this time you've been lied to
It'd really be best if you wouldn't stay

Don't think I asked for the favor
But if I'm in need of one later
I'd do just fine if I'm on my own
Don't think I'm not ever flattered
But what you could say doesn't matter
Couldn't you go and just leave me alone

The feeling would propably be mutual
If you could say you really knew me

(Thanks to Leo)