What Should I do???

Im sorta in a confused, stupid, unsure feeling rite now... N yes.. its cuz of a guy.. AD... Well it sorta an on9 thing... v met n clicked.. he is like 6 yr older than me... things were ok 4 da 1st few months.. till now i tink what should i do?? do i wan tis?? He was reli nice... He was there wen i needed him.. comforting me.. encouraging me.. i havent met him in person yet.. bt im thinking twice.. should i or should i not?? I have a feeling he is cheating on me... i noe he flirts with other girls at da moment.. im not sure how serious he is taking this.. once i told him im gonna leave him.. n he gt pissed.. n sad.. he talked me bak 2 b bein wit him.. is he playing wit me or is he 4 real?? Should i get in2 tis or not... i dunno.. so confused...