43/15 donk. Line check? I don't see anywhere where I can really fold

PokerStars No-Limit Hold'em, $0.50 BB (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

saw flop

BB ($45)
Hero (UTG) ($50)
UTG+1 ($23.50)
MP1 ($67.40)
MP2 ($69.45)
MP3 ($57.80)
CO ($50)
Button ($50)
SB ($71.90)

Preflop: Hero is UTG with K, K
Hero bets $2, UTG+1 calls $2, 7 folds

Flop: ($4.75) J, 9, 8 (2 players)
Hero bets $3, UTG+1 calls $3

Turn: ($10.75) 5 (2 players)
Hero bets $7.50, UTG+1 calls $7.50

River: ($25.75) 4 (2 players)
Hero bets $19.50, UTG+1 calls $11 (All-In)

Total pot: $47.75 | Rake: $2.30