3. Remove morality from the situation. The other person is not bad for not loving you, "nor were you good for wanting them... Don't turn this into a morality tale." If they were acting strangely around the time of the rejection, it's because they felt bad.
4. "Don't keep thinking of the end of this relationship as tragically sad. The only good relationship, the only relationship worth mourning would be one to which two people desperately wanted to belong. And this one, wasn't, in the end, despite all the promising signs, that kind of relationship." Ouch. True. But ouch.
And don't forget the gem at the end. "Have a few rounds of casual sex, if that helps."