Kevin Costner is apparently rebounding from his recent divorce by dating Jewel. TMZ reports that they flew to the Caribbean and spent almost a week together while attending a fundraiser on Richard Branson's private island. Photos show Jewel, 49, speaking into a microphone as Costner, 68, wrapped his arms around her waist. “There was definitely something going on,” a source told TMZ. “They were flirty, and when they were together, it was like they both just lit up.” Another insider added, “You could tell they were trying to be discreet, but anybody who saw them could tell something was going on.” Jewel even mentioned Kevin on social media, writing … “it's an incredible time, and one I use to relax, rest and play w my son! @kevincostnermodernwest was kind enough to mentor our kids this year.”