I love this! The set-up of the two of them is great, with Charlie first just having Harry stay as a favor, then realizing it might not be so bad, and then that it might be good. Charlie feeling that he should have known Fred better is such a marvelous, sparse bit of defining his place in the family.
And the hot! Gah! I started to read this (not really intentionally) this morning, and when I got to the scene with both of them drunk, when Charlie straddled Harry's lap and pushed a hand up inside his shirt, I realized I'd be rushing if I continued, so I finished that scene and left the story to return to after work. I loved that scene, and Harry's response to Charlie's apology. ("I think you will. In fact, I know you will." ) :-D
Harry is a brilliant combination of inexperienced and reasonably self-confident, and the mix makes the encounter in the barn (and his turn-about on Charlie!) extra sexy.
I had to go look up my request after I read this, because it was on target for so many things I like, but I couldn't remember what I'd asked for. Wonderful job!