Logan Henderson, 22

Also in Big Time Rush. Childhood BFFs with Disney’s enfant terrible Demi Lovato. No discernible girlfriend, although he leaves LA sushi restaurants with pretty girls. Good for him.

Emblematic Tweet: @1loganhenderson: Be thankful and enjoy every moment you have! Live everyday like it’s your birthday and your last day! Cheers

Conspiracy Theory: Although he’s technically a Nickelodeon employee, Disney may be pumping him for intel on Ms. Lovato, who has become a vocal critic of the channel’s effects on girls’ self-image.