Credit: David Giesbrecht/©2012 The CW Network, LLC.

Tonight’s the night, GG fans! It’s finale time on the Upper East Side, and to adequately prepare for the occasion, we’re going to take a look back at all that we think we know about tonight’s season-ending ep…

*WARNING: SPOILERS AHEAD. PROCEED WITH CAUTION.*

1. Yes, “Return of the Ring” really means the ring!
And where there’s a ring and a Chuck Bass, there’s a proposal to a Waldorf. The question is, willl it end with a tear-soaked, rejected C-Bass...

2. Blair WILL make the decision that’s haunted her all season.
With Prince Louis well outta the way, there are just two hunky, sharp dudes in the running to be the Upper East Side’s Next Top Mr. Waldorf (seriously, can we have her life?) and tonight she decides which one is THE one.

3.  Lily learns that Bart is aliiiiive!
As if Rufus didn’t have enough to worry about with his crumbling domestic life, now his marriage to Lily might be invalid? Poor dude.

4. The gloves are coming off the UES’ resident BFFs.
When Serena’s responsible for a leak involving nearly all (??) of Blair’s secrets, the Queen B shows her true colors… and starts putting in overtime to get her revenge (with minions in tow!).

5. Ohhhh, and Ms. Sparks is back!
Remember Georgina — last seen trollin’ the UES and trying to ruin royal weddings? Yep, she’s back. And she’s in a limo with the man she formerly duped into thinking he was her baby-daddy and who is currently Blair’s current leading man (yes, Dan). This can’t be good.

Want more Gossip Girl goodness? Like us on Facebook or follow us on Twitter! You know you love us. XOXO

Credit: CW via TVFanatic.com Photo: Gossip Girl Season 5 Finale Sneak Peek: More Secrets From Blair's Diary Revealed!