The deal is good at participating Qdoba locations on February 14, 2016 only. The required kiss can be to your significant other, your friend, or even yourself (or even a picture... of anything).
Qdoba entree choices include Knockout Tacos, Burritos (or Burrito Bowls), Mexican Gumbo, 3-Cheese Nachos, Grilled Quesadillas, and Taco Salads.
You can find your nearest Qdoba using their online store locator.
