"You were a kid. Now you're a man."
Daryl is one of the most precious characters in The Walking Dead. He cares so much. He just doesn't show it, at least not in the ways others would expect him to. It's the little things that matter.
And guess who was the first person to notice that in him? Yup, I'm pretty sure it's Carol. She opened his heart and taught him that it is okay to just "feel it". He grew just like she did. They did it together.