He's sad about something, even if he won't tell you why, you decide to make him feel a whole lot better. 

Johnny: Hold him, and tell him everything is alright.

Soda: Remind him of all the ways you love him.

Darry: Rough... you know... 

Ponyboy: Give him a foot rub. 

Steve: Let him scream into your pillow, then you scream into yours...

Two-bit: Bake him a cake. He loves cake. 

Dallas: Go rob a convivence store late at night, that always seems to make him feel a lot better.