Express sincere interest
in something he does that he takes pride in.
This could be a sport he plays, volunteer work
he does, a hobby, his job, etc. If you would like to know more, ask
questions. If you would like to watch him play hockey, go watch one of
his games. Be sincere, don't pretend to be interested in something
that totally bores you, just to please him.
Laugh at his jokes.
Be careful not to overdo it, you'll be sure to
annoy him if you turn into a giggling teenager whenever he speaks.
Just don't be shy about laughing, if you naturally see the humor in
his jokes or sarcasm he'll enjoy being around you.
If you put your mind to it you can find
something admirable about everyone. So, discover something about him
that you really like and compliment him on that. It could be his
skills as a carpenter, his intelligence, how romantic he is, his super
friendly personality, etc.
Appreciate the things he does
If he takes you out for diner, tell him how good
the food is, how nice the restaurant is, how much you are enjoying
yourself, anything positive about the time you spend together is good.
Even if the night doesn't go as planned, and all seems ruined...look
on the bright side, tell him you enjoyed spending time with him (only
if you did). You will come across as super positive and everyone wants
to be around positive people.
Compliment him on a job well
Did he fix the leaky faucet in the bathroom? Did
he solve a big problem at work? Handle a crisis well? Tell him he did
a good job, and compliment something specific about what he did. For
example, if he renovated the bathroom tell him how much you like the
new cupboards he made.