How do you deal with awkward, and comfortable people?

Let’s say you’re not a very awkward person, and you never really make things awkward… then, now you meet someone who you feel really awkward around, what does that mean? Why is this? The other person’s reaction is just different than what you’d expect, or is different from what other people’s reactions usually are, and they seem kind of boring.. Has anyone ever made you feel this way? Did you solve it? Why was it so? Does that mean that it’s not a good combination for being friends?

And, has there ever been someone who you felt extremely comfortable around? Why is this so?
I’m very comfortable around all my friends, but there is one specific friend that jumps out in my head when I think of comfort around friends. This friend is just so chill.. maybe that’s why. Do you have a person who you’re very comfortable around? And why do you think you feel that way around them?