Jon Gosselin, back on daddy duty Friday, was spotted with babysitter, Stephanie Santoro. Yes, that babysitter. The 23-year old that spent the night at Jon’s house last weekend.

Stephanie brought her daughter over to Jon’s house for a playdate Friday.

This was all kid business — and no monkey business — after Kate gave Jon’s favorite babysitter her two cents about late night visits to their
home.

But, Jon is still having fun — back with main squeeze Hailey Glassman.

Check out Jon’s excellent bar adventure Thursday night.

(Photo: INF Photo)