It doesn't have one specific meaning, but you can infer that he likes you a lot. If he did this on a first date, you can probably also infer that he has no respect for you. This would be something done well after you have gotten to know someone.
It means that that guy is gay and he seems intrested in you
If a guy holds your elbow it means he is protective over you and is caring towards you. This could mean he likes you.
It means that he must go ahead.
Probably
he likes you.
That he wishes to perform oral sex on you.
it means she is going to kill u
The abdominal rectus muscles are primarily involved in this function.
If that happens it means they are in love.
It means that the guy holds a very high opinion of himself (thinks he is better than everyone else).
That shes not dooooooin him enough
Uh...he still likes you