Thomas: Your enthusiasm. When you run into a problem, you can always solve it in some shape or form by getting everyone pumped up and Thomas admires that.
Minho: Your silliness. When you don't take things seriously, or even better use LOTS of sarcasm, Minho just can't get enough of a sarcastic conversation! Anything you can laugh off together.
Newt: Your eyes. Newt will listen to everything you will say, yet he will get lost in your eyes. Newt loves seeing the different emotions brought through them and the love that they pass on.
Gally: Your food. Gally will head straight to your fridge when he gets to your house. He loves your cooking and sometimes just can't get enough of it. He loves it when you prepare meals for him.