Your Girlfriend (In Isolation)

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

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

I heard they got engaged today