Still sleeping with my EX

So my ex of two years broke up with me around a year ago, mainly because of long-distance (I had moved abroad for a year) and him not feeling it was working anymore. Before we broke up I did feel like it was not really working, but I ignored this feeling as I was really nervous at moving away. When we broke up I was really upset and went a bit crazy, messaging him a lot and trying to call, this only lasted a few weeks and then I followed the no contact rule. A few months after the break up I messaged him out of the blue as my friend had mentioned something about him and I had had a really awful night, and felt compelled to message him. he did respond and we spoke for a while, but nothing too personal. Anyway after that I moved back to the place where he lived and we met up, it was meant to be just drinks but after two bottles of wine we slept together. We had a big talk the next morning and agreed to just be friends, but then a few days later we slept together again. We then agreed to just be friends with benefits, but I kept calling this off as I thought I wanted more than that. Eventually by the third time of 'calling it off' we did no contact for a few days, I messaged him again and we met up, he had had a really hard week so I thought it was just a friends thing, and comforted him, we ended up sleeping together again. He went away for a week, and I met up with him and his friends two weeks later. We got drunk and slept together again, this was four days ago. We have been speaking since, and its been casual and not exciting. I know he isn't that into me more than sex, he keeps saying he doesn't want anything serious and that we wouldn't work now anyway. We will still have sex again, as right now its quite hard to meet new people, and the issue is the sex is good too. But I know its not going anywhere, even though I sort of want it to. I don't know what to do and if I should just block him and call it quits? But I think there might be something there if he still messages me and doesn't seem to want to stop sleeping together. 

Any advice would be appreciated, 
Gracie x