First hand for CO, so no reads.

SB ($13.96)
BB ($11.08)
UTG ($19.87)
Hero ($10.19)
CO ($10)
Button ($5.54)

Preflop: Hero is MP with , . CO posts a blind of $0.10.
1 fold, Hero raises to $0.5, CO (poster) raises to $1.2, 3 folds, Hero calls $0.70.

Flop: ($2.55) , , (2 players)
Hero checks, CO bets $2.3, Hero bets $8.99 and is all-in.

I think I'm only slightly +EV, but not sure how else to play it, aside from 3-bet preflop. Plan was to get it all-in on any non A flop.