$400 NLHE Full Ring: Live game 2/5: KK facing river CR

Villain is young, has big stack ($1500). Has won a few pots without showdown. Stacked me earlier when I shoved TT on 874 7 x board with a bigger overpair he flat-called with pre.

In HJ with about $400, K and raise to $25. Villain calls from SB and everyone else folds

Flop ($55) :
SB checks, Hero bets $35, SB asks, "how much do you have?," then calls.

Turn ($125)
SB checks, Hero bets $90, SB calls.

River ($305) :
SB checks, Hero bets $100, SB goes all in, $150 to hero...

gay spot but we are getting too good of a price, i dont even know if he ships a set here when the BDFD gets there, only hand he could really have back doored is 34ss or A4ss? but thats a retarded flop call.

i probs bet abit more on the river like 165 as your bet looks like a thin valuey hand as youre never bluffing that amount here. Hes going to be calling more often than shipping.

I think I would be bluffing here with this sizing a decent amount actually.

Ugly spot here but I'd probably have to call. The villain could be playing so many lines here. I think I could feel better about it if I could rule out villain having hands that make a ST8 or 2P.

I probably would have made my river decision easier for myself by either overbetting the pot on the turn (to make it simple to get it AI) or checking behind and then calling a reasonable river bet from the villain.

Yeah pretty sure we can't fold here but nh