Well I want my snake to like me and care about me. But you can tell that they are comfortable around you because you're the owner. I found out that my BP is more comfortable around me because when I let my friend hold him he didn't act the same, kinda looked like he was going to attack. Haha.
I just love my baby and wish he had the capability of loving back. The only thing he probably understands is trust. Which he trusts that I won't kill or hurt him, so he's comfortable with me.