I've been pretty active. 5 handed.

Effective stacks are 145 (I cover)

I open black JJ UTG, he 3bets from SB, I call HU.

Flop [7d][5s] He CBs 21, I call.

Turn . He hesitates for a second and checks...HERO?


Let's say hero thinks for 5 seconds and checks.

River and he leads 1/2 pot...HERO?

How's a think for 3 sec and shove sound?

PF pot is 28

After flop is 60

He leads 35 into 60 on the river and has 75-80 left.

i dont see how we could have any fold equity here against QQ+ at 100nl.

I checked the hand: We were 160 deep, pot was 70 on turn/river, he had 95 to call on the river.

I don't think I would fold here I were the villain. I might consider folding if i had QQ but better than that almost never..U raised UTG..how often are you calling with a hand that has Tx? So rivered T shouldn't be a threat. Again, the T means that there are less chances that you have set on flop or you just rivered quads. I doubt that you are going to defend your UTG with 77 55 22, so i would rule out sets. Thus given all of this,

a) my 3bet should be a strong hand, I suppose at least JJ+/AQs+(please note that I play with semi nits, avg player is like 17/14 while their utg opening % is usually around 8%)
b) If i have Kd w KK hand I'm not folding. Then i only fear AQd which should be just about the only hand that beats me.
c) if i have Ad w AA im not folding this ever, then again i would probably bet turn w Ad
D) this deep you would probably raise set on flop in order to get more of the stack in before some dumbass scare card such as A or flush falls and I could get away w QQ KK

So from the action I can assume that villain probably has some sort of high non diamond PP or almost total air by the river but feels that he can bluff you off. I'm pretty sure i wouldn't trying to make this move on my stakes but then this depends on your image

Oh, and I would be surprised if villain has flush here..Or he just played it badly..reason for this is that here he should bet at least 1/2 pot w flush just to build pot + you could have a high PP that has a non D and thus a river d would kill all action. Also if you have JJ w Jd or such better PP i think you are just about never folding it on turn to 1/2 pot bet since you might figure out that you have a live FD. Lastly, even if you call and flush hits(if i have nut flush) im betting 1/2 to milk a lover 4 card flush.
and lastly, I dont know if you have time option on the site that you play...but I know i cant make this type of though process in 15 seconds w another 7 tables jumping around..

FWIW, T9s, JTs, ATs are in my range