IS HE GOOD FOR ME???? AM REALLY CONFUSED...I LOVE HIM BUT DOES HE LOVE ME?

I met this guy..on orkut!! 2 years ago!! we are good online friends hez very friendly!! hezz studying in a very good college!! doing hezz B.tech 3rd year in the reputated BITS GOA....!! recently we got so close to each other that he asked me to be his gf!! he said that he loved me..he saw my pic as well!! initially i had no feelings for him..but wen he started pampering so much...eventually even i fell for him!! i started liking him...hez like angel in my life!! helped me everytime and guided every now n then!! i go to him with my problems and he just solves them!! he had made my life easier...i still didnt accept his proposal!! during hes 3rd year final exams...he didnt text me or msg me!! didnt come online as well..he had informed me that he wont be coming online!! coz of the exams!! but a whole week or so he stayed without talking to me..he did msg me a hi and all..but nothing more than that!!! i used to miss him very badly...!! and then i was just waiting for hes exams to finish!! when he completed hes exams...even at that point of time he didnt give me time!! he was busy shifting hes hostel thing and all!! and then he left for Delhi!! i didnt have any idea...where he was!! hes phone was roaming one so he didnt use it....and now hes at atlast come back to his native place!! back home...now he talks to me and chats with me!!! but hez not like before..who used to pamper me and all..hez a changed!!! i missed him soo much and now i see hez changed!! wen i asked the reason he said dat he was in train and no signal and all stuff!! and hes not comfortable talking or chatting with me when sum1s around!! but he still is ready to help me anytime...!! do u thiink he still loves me?? or no..coz i didnt respond to his proposal!! but now i think i love him...!!! what should i do..i dont wanna lose him!! help me guys..:)