Exclusive: Nick Viall admits he's "worried" as "most of my memories in this world end with me getting my heartbroken" in E! News' sneak peek at the Feb. 27 episode
EXCLUSIVE: A source tells E! News that Nick's reunion with his ex Andi Dorfman is "compelling" and will find the former couple talking about "their past"
Andi Dorfman surprised Bachelor Nick Viall at the end of Monday night's episode, but she's not the first surprise visitor to rock the franchise over the years