2008, Tia Williams, Sixteen Candles, Hyperion (2008), ISBN 9781423110323, page 8:Her girl-crush on Skye was a well-known thing.
2010, Brando Skyhorse, The Madonnas of Echo Park, Free Press (2010), ISBN 9781439170809, page 125:I wish I could be Gwen Stefani. I'm not cool enough to have ever become her, or someone like her. I wish I was thirteen again, though, so I wouldn't have to hide my girl-crush on her.
2011, Rachel Bertsche, MWF Seeking BFF: My Yearlong Search for a New Best Friend, Ballantine (2011), ISBN 9780345524942, page 108:I'm as surprised as anyone that my girl-crush is a mom.