A relationship ends because you've outgrown it. It can begin again because you, as two, can fill the new shape. I thought he was going to be in my life forever. Then i thought i was wrong. Now he's back. But this time i know what's certain: he will be gone again, and back again and again and again because nothing is permanent. Especially people. Strangers become friends. Friends become lovers. Lovers become strangers. Strangers become friends once more, and over and over.
- Megan McCafferty, Charmed Thirds