WINNING 'BACHELOR' COUPLES: Where are they now?

It's hard to believe, but "The Bachelor" has been on the air for almost 15 years.

ABC's hit reality series is about to start its 21st season with veteran cast member Nick Viall as the bachelor.

But when the show first launched in 2002, no one knew it was going to last this long. It was critiqued for throwing personal relationships into the public eye and allowing one man to date multiple women at once.

Despite that, the show has become one of ABC's best-performing reality series, and has produced multiple spinoffs like "The Bachelorette" and "Bachelor in Paradise."

And though there's been plenty of seasons, the majority of contestants aren't with the winner they fell in love with over the course of a few months.