SHOULD OR SHOULD NOT...

I suddenly feel scared and happy at the same time...:) I dont know what to feel or say..im wondering whether its a good thing or bad...I question myself everyday now...Is this good or a bad ..??Many times i've gone with guys who just talk sweet and try to get something out of you and then leave you with a broken heart..But i suddenly feel different this time, dont know what is it but i think i kinda like it...but im scared that i might get hurt again...how do we know whether we should just give it a try or back away...??..I think im kinda falling for this guy and its scary...but it's so different because i feel actually very comfortable with him..and its only been bout a week..OH MY GOODNESS..but it feels like its been awhile..I dont know what is it bout him..but i tell him what i feel and its so weird cause it is so so hard for me to tell people how i really feel inside..He makes me calm and just feel relaxed when talking to him..the more i talk to him the more i feel like im falling for him...why??..hmmm i ask myself if i'm the only one feeling this way or is this all just what i feel alone...but i got an answer and im happy with that answer:)Now i just cant wait to see him and just give him a big tight hug ...so should i still carry on with this or should i just back away?