On The Mentalist Season 4 Episode 24, "The Crimson Hat" just before Jane must pretend to kill Lisbon, he hugs her tightly and says he loves her. He later claims not to remember what he said due to the extreme stress.
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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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In The Mentalist Season 1 Episode 23, "Red John's Footsteps" after declaring that he'd willingly die if it meant capturing Red John, Jane ends up shooting and killing the one man he knows could lead him to the serial killer in order to save Lisbon's life. Even Jane looks completely shocked by his actions.
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Teresa leaving for D.C. was bad enough. Did Jane somehow make things worse? Will he finally man up and doing something to stop her before she marries another man?
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Oh boy! What did Jane do to deserve this? More importantly, what will he do to fix it on The Mentalist season finale.
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Maybe some tea will give Jane the courage to make a difficult decision and put his heart on the line.
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Jane looks completely heartbroken. Will he decide to try and stop her from leaving for D.C. with Marcus Pike?
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Is Jane driving Teresa to the airport, or in the opposite direction?
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Jane looks happy. Is that smile because he's decided on a plan of action on The Mentalist.
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With more time to think things over, will Jane decide to try and stop Lisbon from leaving for D.C. on the season finale of The Mentalist?
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Jane did so much to get Lisbon to follow him to Austin. Is worrying about her future plans distracting him from the human smuggling case?
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Is Jane still trying to figure out whether Lisbon is headed to D.C. with Marcus Pike? He's certainly looking at her curiously on this episode of The Mentalist.
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The Mentalist Quotes

I'm just poking at you. It's awfully instructive.

Jane

Jane: I don't want you involved.
Lisbon: I am involved.
Jane: Not anymore.