Your Girlfriend

I'm a boy and she's a girl
 With more charm than most movie stars
 So we met through a friend
 We rent a place and she comes 'round to stay
 And now your girlfriend is ringing in my ears again
 It's no sure shot, but she likes all my favourite things
 I know I shouldn't, but I'd like to spend more time with her
 I wish she'd come over today
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 What am I supposed to do?
 I can tell, they get along so well
 Is it possible, she likes me too?
 I'm not sure if I should read between those lines
 And now you're girlfriend is ringing in my ears again
 I should be moving out, but can't cause we've just signed a lease
 My hands are shaking, the bedroom walls are paper thin
 I heard her come over today
 Thought maybe we'd go out for a movie
 And we can forget friends who'll be fuming
 Then I could walk you home in the evening
 And that's just being friendly
 And now you're girlfriend is ringing in my ears again
 And when she smiles I can't hide my jealousy
 Oh I can't take it, boy, I hope she's faking it
 I heard he bought a ring today
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 I heard they got engaged today