KQ suited UTG+1, i raise.........

[Jakkace]

Cryptologic
No Limit Holdem Ring game
Blinds: $0.15/$0.25
6 players
Converter

Pre-flop: (6 players) Hero is UTG+1 with :Kd :Qd
UTG calls, Hero raises to $1.25</font>, CO calls, 4 folds.

Flop: :3s :8c :qh $3.15, 2 players
Hero bets $2.25, CO calls.

Turn$7.65, 2 players
Hero bets $4, CO raises all-in $16,
Hero ?

Whats my line, the guy is an unknown to me i have no reads on him.