What a tease.

After Chuck rescued Blair, she let go of their inhibitions and they both had some old-fashioned fun (followed by sex!), it looked like this was it. Chair together for good.

It took her engagement to adequate but uninspiring Louis to bring this about, but here they were. Emotionally bonded and passionately enmeshed forever, come what may.

Until Chuck had a last-minute change of heart and let her go in "The Wrong Goodbye." In his heart of hearts, he seemed to know it was the right decision. But it still hurt.

Perhaps they're not meant to be together after all. Maybe the fire that makes Chair so electric on screen also destroys both. For Chuck, he loved Blair too much to risk it.

When Chuck pulled an about-face and gave Louis his blessing, Blair appeared resigned to the same belief - that she needed to profess her love for Chuck, then move on.

Disappointing as this was for Chair fans, it was relatively well done. My only caveat will be if Chuck reverts to his old ways and meddles in their relationship next season.

If he's going to mature and let her go, he has to really let her go.

Do you think Blair and Louis will have their happily ever after? Or will the relationship and life as a princess lose its luster, ultimately leading B back to her Dark Knight?

At this point, it's hard to want Blair and Louis to fail. The way Chuck and Blair ended things Monday night gave them both closure. Maybe now they can finally move on.

The fate of Chuck and Blair (and Louis and Blair) is something we will debate all summer long and potentially beyond, and I'm dying to hear what you all think about it.

As for the rest of the fourth season finale ... wow. That was a lot thrown at us, yet relatively little at the same time. Story arcs wrapped quickly, then new ones began.

When we left her last week, Charlie stopped taking her mystery meds. At the start of the finale, Dan is trying to find her, while Chuck is alarmed and looking for Blair.

B is trapped atop Charles Place with Russell Thorpe, who appears to be trying to set the whole place on fire via some gas leak. They sell gasoline too, man. Just saying.

Then be still my heart, Michelle Trachtenberg graces the screen as Georgina.

I have to say, Michelle had some of the show's funniest dialogue in a long time. She and Jack Bass have really made the last two weeks for me. It was great to have her back.

Why was Georgina even there? Presumably because of the alumni event? Did she even go to Constance? All unclear, but she's so shady and hilarious it could not matter less.

Watching her subtly reference her antics while clamoring to be a part of the scheme was so funny, I couldn't wait to see what happened next (not always the case this season).

What she does next is direct reeling Charlie to the nearest open window. Nice, G!

Up on the roof, Blair clandestinely calls Chuck from her pocket (he's still #1 on speed dial!!!!!) to reveal her location and the gang busts Russell in approximately 15 seconds.

Chuck and Blair decide to get a drink to calm her nerves before he delivers her to Louis, but they wind up getting it on at a Bar Mitzvah. Don't even ask. But it was awesome.

With Adele's "Rolling in the Deep" echoing in the background, Chuck and Blair pretended to be Jewish, then stopped pretending they don't belong in each other's arms naked.

This isn't just love, it's complicated, intense, all-consuming magnetism. Maybe it can't sustain itself long-term, but if nothing else, they gave us one heck of a last hurrah.

Meanwhile, Serena finds Charlie about to plunge to her doom. Charlie says every girl wants to be Serena and every guy wants to date her. This triggers something in S.

She decides she's really letting herself down by not making her own choices and decides (with a little help from the headmistress) to do something for herself this summer.

Charlie is fine all of a sudden, and Georgina, who had to have a reason for hanging around besides making me laugh, either knows or is suspicious she wasn’t ever on meds.

G was right. Turns out that Charlie is really a girl named Ivy and was being paid by Carol to ensure the Van Der Woodsens wouldn’t come after her ever again. Okay then.

The plot holes here are too numerous to count, so let's just hold off until next fall. Kaylee Defer is a cast member now, and "Ivy" has G's number. Let the crazies unite!

Finally, Vanessa finds Dan’s manuscript and calls him a sellout for not publishing it. He calls her a bad friend. She steals the book and has it published, anonymously.

"Where do I send the checks," asks an editor. Because it's that easy to get a book published. Oye. We love Dan, but wow, this is some bad writing. The show's, not his.

Then again, Vanessa did leave for Spain, so this plot line was a net positive.

Fast forward three weeks and story arcs are being tied up left and right. Blair is headed to Monaco to get married, and she’s still being friendly with Dan and with Chuck.

Charlie returns to Florida but longs for NYC. Eric is going off to college, but first, to the Hamptons with Dan. Chuck and Nate are embarking on an epic global adventure.

Serena heads to California to do nothing on the beach. She needs to be alone in Malibu, only to get a job in the movies when a famous director happens to walk past her.

Oh, and there's a positive pregnancy test in the trash Dorota removes as we fade to black! Could be Blair carrying the baby of Louis ... or Chuck?! Is it even B's test?

Quite the cliffhanger to leave us with after a finale that was already pretty darn entertaining. The show went out on a high note and next season could be even better.

Who do you think the pregnancy test belongs to, and what developments are you most looking forward to next fall? Did you like the Gossip Girl season finale overall?

Did Chuck make the right decision? Is it really over for Chair? Was the season as a whole disappointing, or did it redeem itself by the end? So much to discuss. Go to it!

First, a quick poll: Did Chuck make the right decision letting Blair go?

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.