Hayden Panettiere & Wladimir Klitschko Kiss -- Back to Face Sucking!

They've been spotted out getting cozy again lately, but last night Hayden Panettiere and her ex-boyfriend Wladimir Klitschko put all those dating rumors to rest ... by gorging on their tongues in public.

With the entire American Airlines Arena watching, the itty bitty 23-year-old babe and her 6'6" Ukrainian boxing champ lover inhaled each other's mouths at the Miami Heat game in Florida on Sunday.

After previously dating for about two years, Hayden and Wlad ended their relationship back in 2011.

Glad to see they've kissed and made up.