Gwen Stefani and Blake Shelton's exciting engagement news, the No Doubt singer's ex-husband, Gavin Rossdale, has shared a heartfelt message. The star, 51, was married to the Bush rocker, 54, for almost 13 years and shares all three of her children with him so when he posted an Instagram message following her announcement, his fans couldn't wait to read his reaction. Gavin didn't address the engagement directly but admitted life hasn't been easy - especially given the current global