Some things you shouldn’t have to learn about from a newspaper! Thus, as the mighty Avengers pass by a newsstand after a benifit in nearby Central Park, they…and especially an incredulous Hawkeye… are startled to behold banner headlines proclaiming—
Wanda: The Black Widow— a traitor? It isn’t possible!
Pietro: She told us that she was leaving America— but we never imagined that she might plan to betray it!
Hank: We’ll discuss the matter when we get back to Avengers HQ! Then— Hawkeye, wait! Where are you going?
Clint: What’s the difference? I just wanna be alone for a while! Gotta think things out… I’ll be along later… maybe…
Some variation of the “Black Widow: Traitor” headline has run through Marvel Universe newspapers many a time. (Again, strangely for someone so supposedly steeped in secrecy!!) In this case, it was a ruse— Natasha faked a defection so that she could infiltrate enemy ranks for SHIELD. So, a flashy public return to eeeevil might be just what Dr. Nick ordered.
But, uh, she didn’t tell Clint, whoops. So he read about it in the paper. I like that even the framing text compares his moping here to “bleeding-heart romances.” There’s a lot of criticism of Marvel’s Silver Age ladytypes as being dewy-eyed creatures of perpetual sigh, but the dudes spent a fair bit of time in moping melodrama mode, too.
From Avengers #39, by Roy Thomas and Don Heck.