Villain is 31/0 over 13 hands. Only other stat is fold to cbet 50%(out of 4).

He flats my flop bet and then raises my psb on the turn. I find this hard to put down, but I am assuming this is a set or maybe QJ far more often than being something I'm ahead of. I mean this could easily be AcQc, but is anything else taking this line?

Is this an easy fold?

PokerStars No-Limit Hold'em, $0.05 BB (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

CO ($10)
Button ($7.35)
SB ($5.93)
BB ($10.72)
Hero (UTG) ($5)
UTG+1 ($1.47)
MP1 ($9.47)
MP2 ($6.19)
MP3 ($7.75)

Preflop: Hero is UTG with ,
Hero bets $0.25, 3 folds, MP3 calls $0.25, 4 folds

Flop: ($0.62) , , (2 players)
Hero bets $0.60, MP3 calls $0.60

Turn: ($1.82) (2 players)
Hero bets $1.55, MP3 raises to $4.05, Hero?