Liam: Usually, Liam wouldn't cuddle with you or kiss you. He likes to keep to himself, and you are fine with it, because you know that he needs his space.
Harry: He doesn't talk to you. He will listen, but he won't talk to you. He usually likes to be alone when he's stressed, he likes to go on runs, or go to the gym, or just be in the room.
Zayn: He paints when he's stressed. That's his happy place, he loves art and painting, that's what calms him down. When he is calm, he shows you what he drew and what it meant.
Niall: He won't eat as much. He will have one serving of food, then he's "full." He usually will play guitar, which is his stress reliever. He will usually write a song in the process, and when he's calm, he sings it to you.
Louis: He is super sassy. He has a sassy comment for everything that you say. Sometimes, it hurts. And you tell him, and his eyes soften and he apologizes and he cuddles with you, and he isn't stressed anymore.