Hi Joanne,
I went through something similar last year, me and my boyfriend of 2 years split up, we kept spending time together for the 3 months we were split up, and he said the same as your ex: "im happy, im enjoying myself being single... etc." it was torture cos i still loved him, and like you could not let go! eventually he asked me to get back together with him... i dont want to give you false hope that this will happen in your situation, i dont even know if thats what you want, all i am saying is all you can do is wait and see how things go... if you are still spending time together it must mean he still wants to see you! i dont know if you even want him back, but time can be a great healer, not only for getting over him, but for him to realise what it is he wants... youve just got to wait and you may get what you want, you may not, but either way it will be a long painful wait, sorry for the brutal honesty... what i did was just distracted myself with friends, films, books! keep yourself busy constantly.. hope youre ok! x