Closest thing I can find is Linnaea amabilis, but this isn't quite right. Maybe it's some kind of hybrid?
Twinflower (Linnaea borealis)
Unknown vine-like plant
Linnaea is a plant genus which has often been classified in the family Caprifoliaceae (the Honeysuckle family) but may be more accurately considered to belong to its own family, Linnaeaceae. The genus includes a single, generally boreal to subarctic woodland subshrub species, Linnaea borealis, commonly known as Twinflower (sometimes written Twin Flower).