Peter Facinelli and Merritt Wever Peter Facinelli and Merritt Wever

Prepare to see a pretty peppy Coop on the Nurse Jackie finale.  And why not? He's getting married — on his birthday!

In the exclusive preview clip of the episode below, Coop (Peter Facinelli) strolls into the nurse's wing carrying his suit and tie for his nuptials. "Tuxedo, locked and loaded," he tells Jackie (Edie Falco), who barely cracks a smile. (Apparently she doesn't like being on cake duty.)

But it seems Coop may be the one without a smile before the episode ends. Expect a major hitch in his plans for the big day. 

Nurse Jackie's finale, titled "...Deaf Blind Tumor Pee Test...," airs Monday at 10/9c on Showtime. Watch the clip below: