Okay i really need advice or something!!! help please!! =[?

this is goin to be long...okay i met this guy 2 years ago we have been on n on since! its crazy i did alot of firsts with him...idk why but we cant leave each other alone...no matter what happens...right now were togther, its been 2 months n half (longest time togther)...n idk whats wrong he drives me crazy!!! we both have trust issues with eachother...and sometimes idk if i should just give up on him already...i think i might be in love... but im not even sure about that...my feelings are all over right now...at times everything seems perfect but then most of the time i just want to go off on him..lol...i dont want to break up with him...but then again i think i should...i dont know whats holdin me back.. why we cant stop doing this...i dont know what i should do....ughhhhhhh if u get where im coming from help please...