Last night's Gossip Girl threesome, while definitely real and pretty hot, was at the same time fairly tame, at least compared to what some critics feared.

But fear not, next week things will get much saucier via flashbacks of the DOV shocker as the lovebirds piece together what happened, reports say.

And, according to E! Online, none other than Lady Gaga plays a role.

No, she's not joining Dan, Olivia and Vanessa in a foursome, but her visit to the show serves as a catalyst through which Dan, Olivia and Vanessa have to stay connected and work together, even more closely, for the time being.

Either way, everything will be messy for Dan, Olivia and Vanessa when Gossip Girl returns next week. Vanessa and Dan's relationship will be pushed to the limit.

"Things are not well," says a source, assuring us that the threesome will have lasting repercussions for all relationships involved. Guess that's to be expected.

On an unrelated note, a character is going to get in a serious accident. One that will send her to the hospital. That someone is Serena van der Woodsen.