If a guy likes you, would he always try and touch you?

so if a guy liked you would he always try and touch you like your arm or is it possible that he could be more shy about that sort of thing and when he invites you over to watch a movie he will sit right next to you but he won't put his arm around you and when walking with him if I asked he would give me a piggy back but never touch my arm or anything when talking. After we hang out we either talk again over facebook straight away or he messages me saying thanks for chilling with me :) and tells me I am a good chick:) then says goodnight

so I am a little confused he tells me every time he hangs out with a girl and we talk everyday do you reckon he likes me or not?