Girls please help!! boy trouble here!!?

i kinda like this guy but the thing is i dated him b4 and it didnt work out really. we dated 6 days and he came to my bedroom window at 9 aat nite(school nite and at the time i had to be asleep by then) and shined a flashlight in my window. my stepdad chased him across the trailer park and i broke up with him the next day and didnt talk to him for a long time after tht. (this happened in 8th grade i think and now im in 10th) were really good friends again now and we flirt and he says he likes me and wants to no if i like him. the thing is we pick on eachother and joke around(i do it w/ all my friends) but its slightly different w/ him but i think i just like the friendship u no? the first time we dated we were like tht and then when we acctually started datin it changed and was all serious and i want some1 to pick on me and laugh and stuff. i dont no exactly how i feel. my best friend thinks its gross tht i like him. i just dont no!! i want to date him but at the same time i dont. wat do u all think? thanks so much!!