I have this prob with guy ! plz help :s?

i broke up with him since 5 months because of our families and after we broke up he came back to his ex , while he kept talking to me from time to time to fight with n make me " hate him " like he talk and delet me and never talk again only after 2 months he readded me now because he wants the paper i wrote for him whn i was kid ( he was my crush for 8 years we become couples for 9 months and broke up becaue of our familes ) his ex died last month now he is talkign to me until he get the paper and then he will stop talking to me werid thing he says he consider me as sister and he trys to love me he cant he made me promise to invite him to my wedding this is his wish and t o get the letr i wrote for him .. he said he forgtton me last 5 months but itdoesnt show that i dont understand him really he is now not willing to love someone whn i talk to him it shows he want to talk to me he cares bout my studies and my health is he doing that to be good to me or ?? and yes he keeps reminding me i willl have great husband someday