Blake Shelton has become a father figure to Gwen Stefani’s sons, and he has to remind himself of this sometimes. During a Friday morning interview on The Today Show, the country singer opened up about his relationship with his girlfriend’s three children from her previous marriage to rocker Gavin Rossdale. He also talked about what he’s been doing to pass the time while he, Gwen, and the kids have been hunkered down in Oklahoma.