Well, you can be sure that he wouldn't do those things if he didn't find you attractive in some way.
ur good as dead
It could possibly mean that he likes you or that he is just comfortable around you!
It depends, if you told him a sad story before hand he might just be comforting you, if its just natural that he grabs you, then maybe.
he likes you.
If an ex-girlfriend or lover lays her head in your lap and asked you to play with her hair, it is likely to mean that she wants to get close to you. Be sure that you know how you feel about her, and what you want, before you make a move.
If a guy holds your elbow it means he is protective over you and is caring towards you. This could mean he likes you.
probably likes you
If you are dating or hanging-out together then it could mean she likes you, but it's not enough to say "yes this girl likes you a lot because her head is on your shoulder." If you aren't dating then ask her out on a date and if you are dating then you know she already likes you a lot!
Uh...he still likes you
it means the dog likes you
Yes lays is allowed What do you mean by lays?
pretty likely