Pete Davidson and Emily Ratajkowski have gone as public as you possibly can in Hollywood -- attending an NBA together ... sitting courtside, no less.
The new couple -- who've been maintaining a relatively low profile lately -- blew the doors wide open Sunday by crashing the New York Knicks game with the best seats in the house ... and they weren't trying to hide the fact they were a pair whatsoever.
While there didn't seem to be any obvious PDA between them .