A2hh Turns Nut Flush

2-3 NL, 300-Match. Playing big tonight.

Villain in BB is a pro. I think he is sizing to the strength of his hand. He’s very lag and I’ve seen him on 25-50 stream in Texas. We’ve played about 20-30 times together. About 1.2k eff

Hero in HJ with A2hh

Pre: Hero opens 15, btn sb and V call

Flop (60) : KhQh9x
Checks around. Should I be betting here?

Turn (60) : 9hhh
Check check, hero 40, btn calls, V check raises to 165, just hero calls

River (430) : 3x
V 165