All the usual disclaimers apply: I don't own Castle, never will, and certainly have no chance of ever profiting from it.
Sun
When the inevitable finally happens and he stops a bullet with his vest, his mother cautiously begins another discussion about the dangers inherent in getting too close. She says he's blinded by Beckett's radiance and drawn by her heat. She talks about moths and flames and how the last thing she wants is to see him get burned.
Oh, he knows that she means well, but she's using the wrong metaphor and her advice comes far too late. Like Icarus, he's already fallen. The only thing that remains to be seen is whether or not he lands on his feet.