In their weekly preview, Gossip Girl producers Amanda Lasher and Joshua Safran tease the potential sparks that might reignite old flames on tomorrow night's mid-season finale, "Riding in Town Cars With Boys."

We've talked at length about Dan and Blair moving in together, but it looks like B's not the only woman with Dan on her mind. Unlike her best friend, however, Serena's feelings for him are undoubtedly romantic.

Looking back at old Gossip Girl blasts in an attempt to find out where she went off the rails in the dating department, S realizes what Dan has meant to her all these years. How will she act upon this realization?

That we'll have to wait and see. Elsewhere, Blair is still torn over her future with Louis, Trip feels shunned by Nate and the Grandfather, and Chivy makes her UES debutante debut ... but some surprises await.

Check out the two-minute-plus preview and comment below:

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