"We want it both ways: We want love to feel like madness, and we want it to last an entire lifetime. That sounds terrible." Watch Mandy Len Catron's full TED Talk here: http://t.ted.com/9EEoa1Z | TED

Are you a giver, a taker or a matcher? Here's the difference — and why it matters. Watch Adam Grant's full talk here: http://t.ted.com/fHKBnar | TED