Nikki Ferrell took to Instagram to share a sweet message to her BFF, future Bachelorette Andi Dorfman Credit: courtesy of Nikki Ferrell. Sisters before misters! Nikki Ferrell and Andi Dorfman competed against each other (and two dozen other women) for Juan Pablo Galavis' affection on season 18 of The Bachelor -- but they're hardly rivals. In fact, their friendship may be one of the more successful (and unlikely) relationships to come out of the show. .