This The Mentalist screencap might contain
utilitaire sport, véhicule utilitaire sport, 's u v, suv, sport utilitaire, s u v, automobile, voiture, automatique, suv, camion, auto, vus, plage wagon, station wagon, chariot, break, plage waggon, gare waggon, waggon, wagon de plage, wagon de station, wagon, voiture de propriété, chariot de plage, immobilier voiture, and chariot de station.
The writers and actors don't want those two to get together. In fact, they laugh at the fans that want them to. Which personally I find a bit rude, but I won't get into that. Anyway, their reasoning for them not getting together (at least right now) is "they have plus of a brother/sister relationship."
I'm sorry, but every time someone is trying to make an argument for why two people shouldn't be a couple, it's always either "they have no chemistry" ou "they have a brother/sister relationship." But I've never seen anyone deny Jane and Lisbon's chemistry, so I won't focus...