So in the end they all stayed as friends, huh? Quite tragic, really. Might be a cynic, but absence doesn't make the heart grow fonder, rather it's out of sight out of mind.
I love this doujin because it shows the only reliable way to get out of a codependent situation like that. I look at it like this: if time apart doesn't diminish the love you feel for the person, it was a real love. If it does, it probably wasn't. I have no doubt these three would eventually come back together after they'd spent time finding out who they really were and what they wanted to do. But it would be because they wanted to, not because they were dependent on each other.