You can claim a free dessert reward at Firehouse Subs this Valentine's Day weekend (February 13 to 14) by placing an in-app order and entering the promo code LOVE.
Each Firehouse Subs app user can redeem this offer once by tapping on "More" at the bottom right hand corner of the Firehouse Subs app, opening "Promo Code" under Actions and entering LOVE in all caps.