New Orleans firefighter, Caleb Moureu had to trade body shots and hot all-nighters for sippy cups and actual up-all-night fevers when his sister was killed, leaving his niece in his care. But two years in, he's definitely got the hang of this fatherhood thing. Of course, he couldn't do it without nanny-turned-friend and fellow single parent, Lexi. Because of her, things have always been pretty easy. Getting pregnant and going it alone wasn't...