The trailer for How Do You Know, a rom-com with a love triangle between Paul Rudd, Reese Witherspoon, and Owen Wilson, looks somewhat promising as far as romantic comedies go. It asks one of the dating world's great questions: how do you know you're in love?
Well, probably not as one character says — "when I start using condoms with the other girls." But if you've ever fallen in love, or think you have, you've probably begun some inner dialogue with "I must be in love if _____." So, now finish it!