As if a first date isn't already a high-pressure situation, a new survey reveals that it takes just 12 minutes to decide whether or not you like someone. The top three characteristics that make a good impression? A whopping 64 percent of singles say it comes down to a person's smile, followed by making eye contact (58 percent) and having fresh-smelling breath (45 percent). Meanwhile, the biggest turn-offs are body o dor (59 percent), bad breath (52 percent) and swearing (38 percent). Agree?