S6, E13: Valentine's Day aims its sights on the Heck kids when a nervous Brick finds out that his quirky girlfriend Cindy (guest star Casey Burke) wants him to kiss her on the special day; Darrin (recurring guest star John Gammon) asks Frankie and Mike to help out with an exciting scavenger hunt he's putting together for Sue; and Axl begins to question girlfriend Devin's request that he not give her anything for what she considers to be a lame tradition.