S1E17: Valentine's Day

Though Yamada wants to confess his feelings to Nishi, he can't find the right timing. The two of them go on a date, and as Nishi turns things over in her mind, her feelings for Yamada swell. She blurts out, "I love you!" Yamada is taken aback by the sudden turn of events, but... Valentine's Day arrives and Suzuki gives Tani homemade cookies, but his too-honest reaction sends her into a sulk.