Ehhh I like the childhood friend. I think it's nice if we get a "secondary male lead" win every once in a while. Best boy deserves it, and there's no need to break up a happy and healthy couple. Especially with the age gap, it's sensible to have him being the first failed love before moving on to the actual guy. Kinda like Hirunaka no Ryuusei.
I guess as shoujo manga readers we grow a bit used to stories where everything seems like fate since the beginning, so it's always the first guy and we all cheer for the secondary lead knowing he won't win anyway. But it doesn't have to be like that, and I'd be happy if this was the case.