A nod is a sign for yes and the smile is for happiness so that would mean he is in fact in love with you!
a smile is an expression of happiness,humor,love or exitement
he might be he could also have done it to be funny.
That depends on the person. A smile is a smile for many different reasons. Relax and enjoy his company. Each day is something new to discover.
usually it means "yes" or " i agree"
Most likely that she wants to go out with you but she doesn't want to say it in front of her friends.
That he was in a good mood...
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It means that the things done, said or asked do not mean to do anything with love.
that he does not love you!
I think it means that he may be interested, but hes thinking about someone else
If your crush asked you if you will date him or if you love him after you kissed then it means he is interested in finding out how you feel about him.
It means to fall asleep while sitting (or standing).