Harry: He'll always hold the door out for you. Even though it isn't much, he will always run up in front of you and open it. It's an act of a gentlemen.
Zayn: You would always make dinner. You know how hard his work life is, so you try to make it easier for him by making a nice home cooked meal everyday. It may not be much, but it is something that he will never take for granted.
Liam: He does the laundry. You don't ask him to, but he feels obligated. Even when you two fight and not talk for a little bit, he will always pick up the dirty clothes and wash them; he would even clean sometimes.
Louis: You would always laugh at his jokes. Even when they are anything but funny, you would still laugh. It makes Louis feel like he has accomplished something, and you know that. After every joke that he makes, you would laugh, and he would smile at you proudly.
Niall: He would sing to you. It is the cutest thing, because Niall isn't very confident about his voice. He is shy about it, but he'll do anything for you; even if that means singing. Whenever you are overly exited, or even depressed, Niall would hum a light melody in your ear, making you crack a smile every time.