When Blake Shelton and Gwen Stefani were first starting to develop feelings for each other, friend and The Voice host Carson Daly was telling them to slow down. During a recent interview, he shared a story about sitting the two of them down in Gwen's kitchen and basically telling them that the relationship wasn't going to work. Gwen says that she and Blake talked about marriage a lot during the course of their relationship, but she's glad it took him five years to propose. "There was a lot of healing to do," she admits. "It was just natural."