Breakable Rule #5: Follow Ryan O'Neal's lead.
As he famously said more than four decades ago, "Love means never having to say you're sorry." But like sleeping without smudging your make-up or rushing to catch someone as they get on a plane, this advice only works in the movies. "Love means being willing to say you're sorry, a lot," Solomon says, "even if you don't really mean it, even if you didn't intend to hurt the other person's feelings, and even if you think the other person's feelings are kind of ridiculous."
Next: The relationship lessons we learn too late