CNN — There are now 17 hopefuls vying for the Democratic vote to become President of the United States, but there's only one whose spouse has become a talker. If Mayor Pete Buttigieg of South Bend, Indiana, is having a moment, so is his husband, 29-year-old Chasten Buttigieg. His sense of humor and revealing honesty about his feelings have been a hit on social media, boosting his followers by the tens of thousands in recent weeks and helping put "Mayor Pete" on the millennial radar. "The thing I love about him, and maybe the thing you love about him, too,...