The moment you realize you love someone, your worries multiply 100 times. You want them to be okay, always, but you're only a human. You're too weak to stop all the bad, sad things from happening to them 馃挃
I have had people love me a lot who I feel had very little empathy towards me. Loving everything about me is not the same as caring about everything that happens to me.
The trade off is supposed to be that they have the same issues and worries about you. Also that should mean that you benefit emotionally from the good things as well.