I get myself in these situations a lot against donks and end up clueless. Over 27 hands he is 50/25 and 3bet 3 times already.

PokerStars No-Limit Hold'em, $6.00 BB (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

saw flop

Hero (UTG+1) ($630.15)
MP1 ($600)
MP2 ($572.40)
MP3 ($1339.40)
CO ($883.90)
Button ($1305.45)
SB ($630.75)
BB ($347.30)
UTG ($962.05)

Preflop: Hero is UTG+1 with A, J
1 fold, Hero bets $18, 6 folds, BB raises to $30, Hero calls $12

Flop: ($63) A, 7, 8 (2 players)
BB bets $42, Hero calls $42

Turn: ($147) 5 (2 players)
BB bets $72, Hero calls $72

River: ($291) 7 (2 players)
BB bets $203.30 (All-In), Hero calls $203.30

Total pot: $697.60 | Rake: $3