Kate Upton & Maksim Chmerkovskiy — WHAT THE HELL Is Going On Here?

Somebody”s got some explaining to do … because model Kate Upton and “Dancing with the Stars” pro Maksim Chmerkovskiy … the most random two people ever … left a restaurant together Monday night in NYC.

There were reports the two were spotted canoodling inside … but sources close to both camps tell us, they”re not together. Not even close. They”re just friends.

Still, how are they even friends This doesn”t make sense.