Guys/Ladies.
Was playing a .50/1 Nl table last nite..
Picked up

Suited so raised up in late position.
one person calls.
flop is

Other person bets out 3 i call .
Turn is

other person bets 4 i raise to 8
He calls.
River is

Other person bets 6 i raise to 20..
He folds...
My cards muck and on we go..
He then comes back and states A 10 D nice hand....
Has he guessed and got lucky or am i missing something... this was on a crypto site..>>>?