Am I wrong to be upset that he bet me out of the pot?? I like my fold, I don't care (partially) that I would have won the hand, but there was almost no side pot, we should have checked it down. Right?

PokerStars No-Limit Hold'em Tourney, Big Blind is t100 (10 handed) from (Format: Bet The Pot)

saw flop|saw showdown

UTG+2 (t180)
MP1 (t1660)
MP2 (t675)
Hero (t2175)
CO (t2640)
Button (t2790)
SB (t1510)
BB (t285)
UTG (t1420)
UTG+1 (t1665)

Preflop: Hero is MP3 with , .
5 folds, Hero raises to t300, CO calls t300, 2 folds, BB calls t185 (All-In).

Flop: (t935) , , (3 players, 1 all-in)
Hero checks, CO bets t300, Hero folds.

Turn: (t1235) (2 players, 1 all-in)

River: (t1235) (2 players, 1 all-in)

Final Pot: t905
Main Pot: t905 (t905), between CO and BB. > Pot won by BB (t905).
Pot 2: t30 (t30), returned to CO.

Results in white below:
BB has Ac Ks (two pair, aces and threes).
CO has Jc Js (two pair, jacks and threes).
Outcome: BB wins t905. CO wins t30.