Sam & Rachel's friendship history

I need to write up a proper reaction post still (my dash was making me sad last night, so I just logged off instead of playing), but one quick thing!

I've seen a few posts where folks don't remember Rachel and Sam ever interacting before last night's episode, and so I'd like to point back to "Rumors" (where she and Finn were suspicious of Sam, but then, once they discovered the truth, went and bought his guitar back from the pawn shop and supported him) and "Prom Queen" (where Rachel asked Sam to prom, and he declined because she's not really his type, but then she tried again with it as a friendly group date with Mercedes on the cheap so Sam could afford to go and have fun), and "Hold on to Sixteen" (where she and Finn go track Sam down in Kentucky at the strip club. She gives him a pep talk, and also offers her home for him to stay (though he ends up at chez Hudson-Hummel.)) They do have a history!