CO was 12.5/8/3.5 and 26% to steal.

After he raises me, I'm not happy, but what to do? I did the pokerstove and if he ONLY raises with sets, QQ+, and overs+FD, i'm 19% to win (I need 28.6% to breakeven), so it's a fold.
But if I add just one hand I'm ahead of (eg TT ) to his range, then I become 32.8% to win and it's a clear call. Any more than that and it's a trivial call.

He's tight so I have to assume his bluffing probability is low. So what to do? Also, any thoughts on previous play is appreciated.

PokerStars No-Limit Hold'em, $0.50 BB (8 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($29.25)
SB ($99.35)
BB ($56.10)
UTG ($36.40)
UTG+1 ($74.20)
MP1 ($22.85)
MP2 ($8.60)
CO ($50.25)

Preflop: Hero is Button with J, A.
4 folds, CO raises to $2, Hero raises to $6, 2 folds, CO calls $4.

Flop: ($12.75) 2, J, 9 (2 players)
CO checks, Hero bets $8, CO raises to $23.25, Hero ???