After trying this and it not working I would reccomend a period of time completely separate with no contact. You need to detach yourself completely from this person and learn a new way of 'being' without him. It's too tempting to go backwards if you don't have a proper break, the break allows you to separate yourself mentally and move forward. If he doesn't agree to this you must be strong and do this for your own health and wellbeing.

It's entirely up to you. I personally couldn't stay friends straight after breaking up. Though now - two years later, my ex and I are able to be good friends and I wouldn't be without him, but in the early stages after breaking up I don't know if I would recommend it.

Ive just broken up with my ex, and he wants me to start going round to his house and being all friendly etc which isnt wise because its delaying the evitable of moving on, and just dragging out the moving on process. I know from being with my ex that he only wants me to stay friends, in some hope that I will get back together with him and change my mind. Like above says, you need time so you can move on and get yourself together, and in the long run this will benefit you and him then if you want,you can consider about being friends