I've 3bet a few times and the table is just starting so playing 3 handed, I've shown quite a bit of aggression recently with 3bets so feeling like he might be defending wider by calling with more marginal hands. How would you play this river as played?

888 poker, $0.02/$0.05 No Limit Hold'em Cash, 3 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.

Hero (SB): $3.63 (72.6 bb)
BB: $5.05 (101 bb)
BTN: $3.04 (60.8 bb) Villain 44/33 (44 hands)

Preflop: Hero is SB with Ks Qs
BTN raises to $0.17, Hero calls $0.15, BB folds

Flop: ($0.39) Qh Ts 4h (2 players)
Hero checks, BTN bets $0.19, Hero raises to $0.57, BTN calls $0.38

Turn: ($1.53) Jc (2 players)
Hero bets $0.76, BTN calls $0.76

River: ($3.05) 3c (2 players)
Hero checks, BTN bets $1.54 and is all-in, Hero ??

Final Board: Qh Ts 4h Jc 3c