'The Bachelor' After 20 Years: Host Chris Harrison Reveals Show's Biggest Reunion

— -- Love is in the air and “The Bachelor” host Chris Harrison has seen everything.

On Valentine’s Day Sunday, Harrison will host "The Bachelor at 20: A Celebration of Love," a two-hour special celebrating two decades of happiness, heartbreak and hysterics.

“It’s been an amazing ride: 20 seasons,” Harrison told “Good Morning America” co-anchor Lara Spencer. “Everybody’s back. All our alumni are back. This big happy, dysfunctional family that I love so much…”

Looking back on those years of "The Bachelor," Harrison will reminisce with viewers about 20 seasons of romance: the memorable first meets and the romantic dates where love bloomed, some of which led to heartbreak, and others to touching proposals.

Harrison will also talk to Kaitlyn Bristowe, the bachelorette herself, and Shawn Booth about their unique love story, along with many other favorite couples from past seasons on how their love stories have continued long after their final rose ceremonies.

Then, Bachelor Nation is invited to another wedding, as Jade Roper and Tanner Tolbert, the newest sweethearts, tie the knot.

"The Bachelor at 20: A Celebration of Love," airs Feb. 14 on ABC.