Ex relationships,,how do i deal with it?

I been broken up with my ex for about a month in half , we did decide to stay friends its the most difficult thing to do and its been very turbulent from the break up till now. Im not over her , i do see her quiet often during the week even on weekends. I recently heard she was dating from a facebook status, this really enraged me and i told her how much it pissed me off ,i cant be expected to be happy with some 5 minute blow in whos taken my place, im not sure why she wants me being so close to her? she cant expect me to be happy about her dating life, i have tried the non contact with her it does'nt work 2 days we go and we are talking again , im not sure how to deal with it , i still want her..