Sam Hunt -- So Hot ... So Single (VIDEO)

Country star Sam Hunt showed our photog why he's ridiculously appealing, and he didn't even have to try.

Sam was flying out of LAX Wednesday when our camera guy asked him some good questions ... for example, do country singers write better songs when they're in relationships or breaking up?

He also explains why he and other big country stars are so irresistible. That question's not so great, because it's obvious.