How do you know a guy has strong feelings/is in love with you?

He would drop everything if I needed him.
He trusts me.
He helps me when I ask.
He teaches me new skills.
He listens instead of yells.
He laughs at my jokes and cares about my opinions.
He loves my habits and quarks that would annoy others.
He shops with me even though he hates shopping.
He always includes me in his plans.
He never talks down about me to friends or family.
He appreciates everything I do for him big or small.

I could probably go on but I think I got the main point down. It's not about what he buys me or what his body physically does when he's around me. It's about compatibility and the little things.