Maria thinks she's in love - with Mr. Riley, the substitute English teacher! Not only does she feel encouraged by his positive attention, she's convinced that they have tons in common. Sharon's efforts to steer Maria towards a more practical boyfriend - such as Brock - are met with disdain. When Mr. Riley asks Maria out for lunch on the weekend, even Sharon has to admit that something authentic could be going on. But is that appropriate? Adam convinces her that it's not - and Sharon goes to elaborate lengths to spy on Maria and Mr. Riley's 'date' to ensure that Maria is safe. What she discovers is that it's more than safe - it's a meeting of prized pupils gathering for a volunteer literacy program Mr. Riley has designed. While Sharon's braces contribute to almost burning down the restaurant, a devastated Maria has to come to terms with her embarrassing misunderstanding of Mr. Riley's attention.