Learning the game, hand from last night

[bdmcgraw]

Short introduction: I'm mainly a limit player but have been dabbling in low stakes NL to become a more complete player.

I have no read on the opponent. About 5 minutes before this hand I raised with AA, flopped quads. Checked around to the river where this same player open folded (calling pflop with absolute trash i suspect as the board was completely paint with a flush). I showed them down to another player during that hand but I was somewhat taken aback by the open fold.

Sorry for the lack of conversion I cannot find a converter that supports Crypto format.


marsipan: posts small blind $0.50
Phil29033: posts big blind $1
----- HOLE CARDS -----
dealt to hero [Jh As]

zz: calls $1

hero: raises to $3
marsipan: calls $2.50
Phil29033: calls $2
Alex02036: calls $2
----- FLOP ----- [6c Ac Jc]
yy: checks
xx: checks
zz: bets $71.25 and is all-in

Hero does what?

If this is a blatant fold, please explain why so I act appropriately in the future. There was some questionable chat after this hand.