Rembrandt lighting - I had her sit on a pier and used the snow as a natural reflector to shine light on the left side of her face (the right side of the photo).

Split lighting- I had him sit on a fence and look to the side so the sun would light up the side of his face to create split lighting.

Loop lighting- Since the shadows are not connected it creates loop lighting since she was mostly faced towards the sun but then slightly turned her face to away from the sun.