Haru:

He loves you smile.
It always makes him happy to see you smiling and being happy.

Makoto:

He love your hair.
It always flows so perfectly without you trying.
And it looks so shiny as well

Nagisa:

He loves your body shape.
It has curves all in the right places and since you are smaller than him it's great for cuddling.

Rei:

He loves your hips.
They always sway nicely whenever you walk and believe it or not he always had his arm around your waist.

Rin:

Dem legs gurl.
They are perfectly tan and toned and you half AMAZING calf muscles.
He looooves they way they look when you walk.