He kisses Jackson back and hoists him up a bit more. Oh, he could've waited until they got to compound to feed on Jackson, but that's not what he'd wanted to do. Waiting would've driven the young Mikaelson a little crazy. He does, however, give a bit of a smirk.

"Oh, I plan on it."

Which meant walking through the French Quarter while carrying Jackson. There were probably eyes on them the whole entire way.