Lauren Alaina is single and ready to dance…Garth Brooks is headed back to TV… Lauren Alaina and her comedian boyfriend John Crist have broken up. Lauren said, “I mean, there’s like no big story. We were like, best friends before we dated, and we’re still best friends. It just didn’t work out. I guess that’s how dating goes, right?”They dated for 4 months and now she is focusing on her stint on Dancing With the Stars. Garth Brooks is getting a TV special.Garth:…