"All right. Nothing to worry about." Charles kissed the top of Raven's head and did indeed let it go, leaning back in order to properly brush her hair. He was good at it from long practice, starting at the bottom to work out tangles before slowly working his way up until the brush glided in heavy, smooth strokes through the tumble of Raven's blonde hair.
"Erik told me about the other night," Charles said, as gently as he could. There wasn't really a tactful way to broach your little sister ended up naked in your best friend's bed, but he wanted to talk to her about that too. It wasn't a healthy thing, not in his mind, to act out that way--and if Erik had been the type to take Raven up on her offer Charles couldn't seeing it ending in anything but heartbreak.
The fact that he thought his ending up in Erik's bed would end in anything else spoke to his almost blind, faithful optimism, but that was something Raven didn't know about. Couldn't know about, at least not yet. He was sure she would be all right with it...but he'd never shared the part of his life that involved male companions before, so perhaps he wasn't as sure as he thought.