Keith Urban and Dierks Bentley shared some sweet sentiments about their wives in honor of Mother’s Day on May 13. Dierks Bentley & Cassidy Dierks married wife Cassidy Black in 2005, and they have two daughters, Evelyn Day, 9, and Jordan Catherine, 7, and one son, Knox, 4. “It’s the toughest job out there being…… MORE