Check Elizabeth A. Lynn's Watchtower series. If you ignore the fact that it focuses more on the sex than the emotion, and the fact that all of it occurs between between same-sex couples, there is some agonizing-over of love between close people, brothers, actually, but it could apply to childhood companions. I think that occurs in Dancers of Arun. Fact is, I think most authors shy from childhood friends becoming lovers. I am an ecclectic reader, and have only run across subjects like this a few times. IMO, it would be rather uncomfortable to pursue a relationship along these lines due to the what-if-it-ruins-our-friendship factor. She would be very tentative about expressing the way she feels, perhaps springing strange-seeming personal thoughts, or questions about how CharName feels about her or what she does, and then shying away, ending the conversation before it can be answered. I don't think that kind of behavior would be OOC for her either, because often such bubbly high spirits mask uncertainty and outright fear of rejection. Just putting in my 2 cents.