Mason is your older brothers best friend, and maybe your future love buddy. He's just a year older than you and he is majorly affectionate.

Your sitting on the couch next to Mason and your brother is next to Mason. Mason has his hand on your shoulder, gently rubbing it in a loving way as he talks to your brother. Mason is holding himself back from sliding his hand down to your waist or thigh, and the thought of touching you like that makes him feel a little warmer.