Subjects who thought about a romantic walk with the person they loved performed better on tasks that required creative thinking. When asked to think about a sexual encounter with someone they didn't love, the subjects performed worse on the creative tasks, but better on logical puzzles. Scientists reasoned that romantic love makes us see things from a long-term perspective (which is good for creativity), while sex makes us think short term (which is good for logical thinking).
So now we know that love makes us creative, while lust might have the opposite effect. I'd like to add heartbreak to the list of creative forces. Without that we wouldn't have Shakespearean tragedies or Kanye's amazing song "Heartless."
Does love make you more creative?