A Trystin is a handsome, caring, muscular guy who is himself. Although he is seemingly distrusting, it just means he is not going to let anyone hurt him. He is someone to have on your side. He is lovable and hard-working, and gets along with everybody, with sweet eyes and an amazing smile.
"Look who's arm is around her! He sure looks like he can protect her."
"Seems like a Trystin if you ask me."