As we already know (it’s marked on our calendars, duh!), Chord Overstreet will be back as Sam in Glee’s Season 3, Episode 8, "Hold On to Sixteen."  But so many questions! How long will he back? Will he rekindle any romances?  What songs will he sing?

CAUTION: Major spoilers ahead!

Credit: Adam Rose/FOX ©2011 Fox Broadcasting Co. Photo: Sam Performs in Glee Season 3, Episode 8, "Hold On to Sixteen"

What we know so far.

- An ex wants Sam back....
- But Sam wants a different ex back.
- Sam sings a Toby Keith song for his Season 3 debut...
- Toby Keith does not sing a Sam song.

So what of this awkward love triangle (or square, rather — sorry, Shane)? Looks like Mercedes (Amber Riley) — the object of Sam’s affections — may be warming up to the idea of being with her summer love as they are rumored to be performing “All I Want for Christmas Is You” in Season 3, Episode 9 (the Glee Christmas ep, unofficially titled “Extraordinary Merry Christmas”). And even if she isn’t in that very ep, word on Spoiler Street is that Sam is BACK at McKinley High and in New Directions... so there’s  no avoiding him now! (Oh, poor Shane... )