I've seen a YouTube of two of the singers from Pentatonix, Scott and Mitch, reading aloud fan fiction about themselves. Both young men are openly gay, and went to school together. They're great friends, but not otherwise involved, unless you read the fan fictions, in which case they're definitely a couple. They were laughing and the fiction was actually rather sweet, but obviously, even minor celebrities are well aware of the potential of the Internet and fan interest.
For the shiggles, the video.