Clean break is the one you want - my ex actually said "I think we should break up, but still be friends I want you around" and wondered why I said she wanted her cake and to eat it too and to pick one or the other.
She thought I was being "selfish" at the time making her pick - but sometimes you need to put the old foot down. It might be the best thing that ever happened to you.
Rich
EDIT
For the record she tried to make it work but I broke up with her later when it just didn't work for me anymore when I started seeing who she really was - and I took the advice of OCUK and the wall of radio silence went up, didn't speak to her for two years after I broke up and have never been happier
/EDIT
She thought I was being "selfish" at the time making her pick - but sometimes you need to put the old foot down. It might be the best thing that ever happened to you.
Rich
EDIT
For the record she tried to make it work but I broke up with her later when it just didn't work for me anymore when I started seeing who she really was - and I took the advice of OCUK and the wall of radio silence went up, didn't speak to her for two years after I broke up and have never been happier

/EDIT