How do you really know you care about someone? How do you truly know?
You know when you want to take their pain and their hurt and make it yours. Only so that they will smile again. And then nothing else matters. You know when you want to erase even the smallest frown that creases their forehead. You know you care when all the work you do and any trouble you take doesn't matter, only because eventually, it makes them happy.
You know you truly care when you wish you could protect them from anything that could hurt them. And you wish you were powerful enough to absorb all of it. Only because then, they would be happy.