Romantic dates can be hard on the wallet. Drinks, a candlelit dinner at a fancy restaurant and cover charges for some jazz can all add up. But a special evening can be had absolutely free at the Martha Lafite Thompson Nature Sanctuary. The 100-acre nonprofit sanctuary is a nocturnal paradise. It offers moonlit hikes on four miles of trails. There are stargazing nights when visitors may peer through a telescope and identify stars and planets from a guidebook. The Native American storytelling nights feature tales from nature and the spirit world. And if a coyote should howl, that's just an excuse to snuggle closer.