I'm with this boy who ive been wit for 2 years off n on but i feel as if i love my ex still??

ME n dis boy have been together for 2 years off n on n dere was dis time we broke up for 4 month n fo sum reason found new people .....i mean i dont kn if u can fall in luv just in 4 month but i feel like i did.....i mean da boii i got wit after we broke up i liked since 9th grade ( im goin to 11 th now ) .....n i never thought id get a chcne wit him n for sum waii out of nowhere it happened....well we broke up cuz problems wit him cuz he was to much of a flirt n from what he quoted " we werent happy" .....well after dat me n my ex got bak together n he dumped da gurl he was wit n everything to b wit me but while dat was all happenin da boii i liked since 9th grade started talkin bout me n shyt but i knew from sum reason it was cuz he was tryin to get y atttention ....but i wasnt sure so now were starting to talk again tryin to forget bout dat past....i dont no wat to do cuz i think im falling for him again n i dont kno if i want dat or not cuz of da boi im wit now ..wat should i do??