It's anonymous, a short untraceable email which he dismisses as spam:
Bryce is not the guy you think he is. Get out before he breaks your <3
When he gets another Chuck finally pays it some real attention, wondering who's got it in for Bryce.
He's not your partner. You're his mark.
After leaving, he finds unwanted sympathy in a terse:
Sorry, man. Tried to warn you.
Back at Langley, Bryce moves smoothly away from the PC.