On this article.
In my case it takes like, a year for me to stop just worrying that she's not happier elseswhere. Then when I'm sure she is, I'm still annoyed that she doesn't do enough to keep herself from falling apart. And by the time I want to call her names, I make a point of deleting her contacts, so that I don't. Then she contacts me and I call her a ditz.
Haha.
