20/20 to Explore 'Crazy, Stupid Love' This Week, 2/15

How far would you go to find - or keep - the person of your dreams? "Crazy, Stupid Love" airs on "20/20," FRIDAY, FEBRUARY 15 (10:00-11:00 p.m., ET) on the ABC Television Network. Anchored by Elizabeth Vargas and David Muir, reports include:

Transgender Sweethearts: Eighteen-year-old Katie Hill and her 17-year-old boyfriend, Arin Andrews, are crazy in love. They're like any other teenage couple except for one thing -- they were each born the opposite sex. Deborah Roberts reports.

Sniff Your Way to Love: It's a new trend in the world of dating that's spreading throughout the country -- pheromone parties. At these get-togethers, singles submit a T-shirt that has been slept in for three consecutive nights so that other participants can pick the scent that is most appealing to them. "20/20" follows 35-year-old Holly as she goes through this three-day ritual, culminating in a Houston party, where ABC News correspondent Nick Watt, armed with his own T-shirt, gets his nose in this smelly trend.

Way Out Love: Crazy in love couples are saying "I do" in more bizarre ways, from skydiving nuptials to exchanging vows in a shark tank. Jay Schadler reports on a couple who have taken wedding nuptial mania even further. To date, they have had 34 weddings in 21 countries for a one-of-a-kind worldwide romantic journey.

Looking for Love: From a professional cuddling service to make out parties, Dan Harris report on the crazy and sometimes extreme tactics people use to seek love and affection in today's hectic world.

Extreme Proposals: It used to take just a ring, a drop to one knee and those four magical words, but today it seems a successful proposal needs to wow not just your girlfriend but millions online. Elizabeth Vargas reveals some of the wackiest and most romantic viral proposals.

David Sloan is senior executive producer and John Green is executive producer of "20/20."

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