1.
They always respond to your texts.
2.
They bring you a drink without being asked.
3.
They don't play grab-ass in public.
4.
They love your pets as much as you do.
6.
They've got great taste in music.
7.
They encourage your healthy pursuits, like getting closer to nature.
8.
They don't "leave their wallet at home."
10.
They're affectionate.
11.
They're interested in your steampunk band.
12.
When you come home staggering drunk, they make you a freaking grilled cheese.
13.
They're not a douche.