Had only played 2 orbits with villian. First real hand I'd seen him play.

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) FTR converter on zerodivide.cx

Hero ($27.70)
SB ($25.45)
BB ($17.14)
UTG ($18.25)
MP ($29.55)
CO ($39.40)

Preflop: Hero is Button with J, J. SB posts a blind of $0.10.
UTG calls $0.25, MP calls $0.25, 1 fold, Hero raises to $1.5, 2 folds, UTG calls $1.25, MP calls $1.25.

Flop: ($4.85) 4, T, Q (3 players)
UTG checks, MP checks, Hero bets $3, UTG folds, MP calls $3.

Turn: ($10.85) 3 (2 players)
MP checks, Hero bets $5, MP calls $5.

River: ($20.85) 8 (2 players)
MP bets $8, Hero folds.

Final Pot: $28.85

what's your play here and what do you put him on? I thought maybe made straight on river... ??