What do i do about my ex help!?

me and ex broke up last march. however after we broke up we still would mess around. however me and her graduated when to different school we barley talked then suddenly we did a lot again we both were visiting our families in jan and we hung out ended up kissing. then we stopped talking again lol however shorty after we hung out again we cuddled but didnt kiss for the first time since like we first started hanging out we kissed goodbye everytime we hung out but then one night we didnt (most recent) well randomly ill have dreams that were together and i wake up all happy just to realize were not. but then when i think about us dating again i remember all the b.s it was and i dont even want to date her but then again i do miss being with her i turned down girl to this day mainly because in my mind for some reason well get back together what do i do?