In The Mentalist Season 2 Episode 11, "Rose Colored Glasses" after solving the case, Jane and Lisbon share a dance to the song "More Than Words. Lisbon certainly looks comfortable in Jane's arms.
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Sure, two murders have taken place on "Rose-Colored Glasses." But there's still time for punch!
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Rigsby pretends to be a class member at a fifteenth high school reunion, in order to cause a distraction, on the episode "Rose-Colored Glasses."
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In this scene from "Rose-Colored Glasses," Jane speaks to a classmate attending a high school reunion where a double murder took place.
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Jane and Lisbon attend a high school reunion on the episode "Rose-Colored Glasses." They investigate a murder there.
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Don't get too excited. Jane and Lisbon are only dancing at a high school reunion here due to an investigation.
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The Mentalist Season 2 Episode 11 Quotes

High school - best years of your life.

Jane

Do that again and I'll arrest you.

Lisbon