let's be friends

err...

stage one:friends

stage two: bonking/shagging (I hate that word potter) + rosy few months

stage three:they owe you money

stage four:contemplate finishing it

stage five:finish it.

stage six: two months of bitter bastard phone calls, their mates being tossers and they still owe you money

stage seven: give up.
 
can't say i ever had to finish it, my girlfriends in the past always loved me too much and it drifted into friendship, never any bitterness, but not everyone is as wonderful as me :(