This The Mentalist screencap contains
carvalho vivo, live oak, faia, árvore, elm americano, elm branco, elm água, elm rocha, americana ulmus, olmo branco, olmo da água, olmo da rocha, ulmus referente à cultura norte-americana, american elm branco olmo, água elm, ulmus, and ulmus americana.
The writers and actors don't want those two to get together. In fact, they laugh at the fãs 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 mais 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" or "they have a brother/sister relationship." But I've never seen anyone deny Jane and Lisbon's chemistry, so I won't focus...