How to make people like me?

How can I make people like me and feel comfortable around me?

A friend of mine is very friendly and easy to go and talk to.
Everyone likes him. Every girl likes him.
This is the problem.

As for me, by nature, I’m not a smiling creature.
I can force a smile, but it always puzzles people in one way or
another.

It’s not like people are dying to leave me,
but it’s not like they want to be near me as long as possible either.
Maybe it’s all only my imagination.

So what do you think?
What methods do you use?