10nl FR - Turned straight facing river donk

[The Bean Counter]

Easy fold on the river?

I only bet half pot on the turn as I figured there is a likely flush draw out there on the flop, but that seems just terrible logic on reflection - agreed?

UTG+1 is 14/10 short stacker, passive post flop but willing to get it in pre with 88+, AJ+. Probably views me as fairly aggressive.
MP3 is a 29/14 over 85 hands, seems fishy, overly aggressive post flop and will barrel and stack off with top pair HU.


PokerStars No-Limit Hold'em, $0.10 BB (9 handed) - PokerStars Converter Tool from FlopTurnRiver.com

SB ($9.65)
BB ($10)
UTG ($10.60)
UTG+1 ($7.98)
MP1 ($4)
MP2 ($12.84)
MP3 ($8.21)
Hero (CO) ($12.41)
Button ($10)

Preflop: Hero is CO with 9, 10
1 fold, UTG+1 bets $0.40, 2 folds, MP3 calls $0.40, Hero calls $0.40, 2 folds, BB calls $0.30

Flop: ($1.65) 5, J, 8 (4 players)
BB checks, UTG+1 checks, MP3 bets $0.60, Hero calls $0.60, 1 fold, UTG+1 calls $0.60

Turn: ($3.45) 7 (3 players)
UTG+1 checks, MP3 checks, Hero bets $1.70, UTG+1 calls $1.70, 1 fold

River: ($6.85) K (2 players)
UTG+1 bets $3, Hero???