Hurt happy and confused

i was dating my EX for 7mths we met online but it was almost fait after taking to him to then find out we had been living 4 doors away from each other for 3yrs and never knew its a small world as they say. Anyway we broke up 3mths ago he moved away due to a new job but then said he couldnt do long distence, and that its the same cause his long term relationship of 8 years ended and that was very very painful for him. i was hurt but the thing is the physical side between us hasnt stopped which is a new thing for me but he say he loves. its not not just physical stuff between us he calls me and coming to see me when ever he is in the area, he always wants to help me out in anyway he can either helping me to pay a bill or wanting to look after my daughter if i neeedd for a few hours so i can do work at college etc and when i say no he gets upset at times saying its silly of me to not want help from him and that all he wants is the best for me and i mean the world to him. this feel great, but we are not together and this cant be healthy what can or should i do, and if he really careas so much then why are we not together and why cant he just walk away i no i havent but when ever i have tried and told him not to contact me he comes back saying he cant