Songstress Kelly Clarkson is longing to make music with suddenly single Kevin Costner, according to insiders. RadarOnline.com has gotten word that Clarkson is apparently jockeying for the Yellowstone star to ask her out on a date. “She’s crushing on him big-time and making it known in his circle that she’d like to date him if he’s game,” a tipster tattled. Now that the soft-spoken cowboy, 69, is back on the market after his 2023 split from ex-wife Christine Baumgartner, 50, sources snitched the 42-year-old daytime chatterbox was scoping him out for her first serious romance since her 2022 divo…