I checked back the river as his passive approach is going to be a flush sometimes. I think i missed out on value vs his calling range though!
Hand converted with online PokerStrategy.com hand converter:
$0.05/$0.1 No-Limit Hold'em (6 handed)
Known players:
[tg]BU$49.08:///////;SB$20.83:///////;BB$3.44:///////;MP2$9.17:///////;MP3$9.91:///////;CO (Hero)$11.20:///////;[/tg]
Preflop: Hero is CO with 4:d, 4:s.
MP2 folds, MP3 calls $0.10, Hero raises to $0.35, BU folds, SB calls $0.30, BB folds, MP3 calls $0.25.
Flop: ($1.15) J:s, 4:h, 3:s (3 players)
SB checks, MP3 checks, Hero bets $0.55, SB folds, MP3 calls $0.55.
Turn: ($2.25) 8:h (2 players)
MP3 checks, Hero bets $1.50, MP3 calls $1.50.
River: ($5.25) 9:h (2 players)
MP3 checks, Hero checks.
Final Pot: $5.25.
Results follow:
Hero shows three of a kind, fours(4:d 4:s).
MP3 shows three of a kind, jacks(J:h J:d).
MP3 wins with three of a kind, jacks(J:h J:d).