[ Probably because Peter won't have to endure the intense stares and (strangely) complex facial expressions she will make if they were ever Truly secluded in a cavern. It's terrifying how simple it is for her to focus all her attention on one thing, and sadly, she'd want that thing-- Peter in this case-- to be bathed in light. Blinding, super hot light. She will endure every awkward hand fumble or conversation starter if it means she can stare at his face. His hair, too. Mostly his face, maybe his arms. ]

No. It's vastly different. A romantic cavern is like getting washed up on the beach after a terrible and heart wrenching shipwreck only to discover we are the only two survivors. It also makes a very cute picnic spot. [ He is right though about both those things. Her actual talent of making everything romantic and cute, and also having no idea what the Tunnel of Love is. But the name alone gives her enough of an idea to pass judgment. ] But if Peter wanted to go in the Tunnel of Love, Juvia will not protest. [ Granted, if he wanted to go anywhere she wouldn't have an issue with it, but she thinks he already knows that enough to where she doesn't have to explain how much of a puppy she is. ] And good.

Then we can either claim a balcony, or go to the garden. [ She says, all the while packing an absurd amount of food onto a plate for him to eat later. At least she's not shoving it into her purse? ] Which would Peter prefer?