What should I do, wait,,,leave stay ?

Its 7months I am dealing with this guy.....we are not officially together but yet we do everything as if we are together and not allowed to go with anyone else. He has a 4y/o and got out of a reraltionsjhip about 1year ago so it wasnt that long after we met he has always told me he needs TIME and in time maybe one day we will be togther....but that is just a excsue becasue when things dont go his way he throws in my facer YOUR NOT MY GIRLFRIEND he has done it numerous amount of times but now im fed up i love him and i know he loves me but i dont understand why cant he commit? he is playing games with my head and i told him i am fed up i havent called him its been 2 days but he has sent me tyext messages saying he misses me and wants to see me however i respond that i cant right now......im not sure what to do ? you only realzie what u have when its gone right ???? help do i give him his time he will reazlie he rather have me in his life than be without me? we have been threw so much together he always says were going to haveeachother forever but im fed up of the fact that were not together so he can use it as en excuse when its convinient for him