Online 10 - 5 players

Pre Flop: (1.5 SB) Hero is UTG with 7 7
Hero raises, CO 3-bets, 1 fold, SB calls, 1 fold, Hero calls

CO is LAGTAGGY (at least a decent player but no specific reads) who has been 3betting Hero a lot.

Flop: (10 SB) 2 T 3 (3 players)
SB checks, Hero checks, CO bets, SB calls,

Decision 1: Call or raise?

in a 3 way pot i would errr on the side of checkraising here, esp vs a guy who seems to be 3betting you with a really wide range. more importantly is how often is he barreling the turn, and esp in a 3 way pot? if he checks behind the turn when called in two spots i would c/r the flop. if he habitually bets the turn, you can call the flop and then you can check the turn too and see how you feel about the situation, but at least he is betting your hand for you in case you are ahead.

Ok, moving right along to the more interesting decisions.....

I do in fact c/raise, villain now 3bets, SB drops off, I call (not having fully decided on my plan, but maybe calling down if no flush comes, maybe folding on the river. what do you do in various situations here? In any case, in this particular hand, something else happens:

Turn: 7

What's the new plan?

Bet/3b. He should call with most of his overcard hands and rais w overpairs. Agree with CDC but I thin people who 3bet in this 3way spot w just overs and barrel are few and far between.

Mitch, Are you discounting flush draws based on the flop action, or do you just think the ratio of overpair combos vs draw combos is high enough to 3b, even if we risk getting 4b by flushes?

I think that's what Mitch is saying. Realistically how man flush combos are there? 5? 7? There are 24 overpairs, half of which don't even have a spade.

My first instinct was bet/3, but isn't this super hard to balance?

Undiscounted, I'd say:

AK/AQ/AJ/A9/A8
KQ/KJ
QJ
Also with some discount, but not more than 50%:
K9/Q9/98/87

And remember the 3 combos of TT, which may not cap but still beat us

So we are actually looking at like 12-14 combos vs 24, so it's actually quite close, and 3b starts looking bad if you discount some of those combos, since he's not always raising, especially the 50% of the time he has no flush card, especially with JJ.

your last point is my main concern. If he knows you're good he's pretty likely to see the donk as a gateway to 3bets and not hit the raise button. I mean I'd never raise this turn with red queens if I knew you were the donker. But I don't even play this high, let alone win or anything.

I feel like we should be 4-betting preflop and going from there against someone who has been 3-betting us a lot given that the SB came along. I'm fine for not capping any hand HU but with the SB in there, you would have capped all your big hands and I think 77 is big enough to be included in that unless SB is a "ZOMG 99-QQ" cold caller.

As played I like your flop line.

Turn is tough between c/r and bet/3b. Kinda depends on the aggressiveness of your opponent and whether he is more likely to bet AsKd now that a spade hit or more likely to check it.

Unless he's brain dead 3-betting is spewy. He should be thinking spade draw after we cr the flop.

I totally missed the spade draw.

Would cr flop. bet/call turn. I wouldnt get fancy on the river unless I knew his range was overpair heavy.

Anybody lead the flop?

So continuing....

On the turn I lead, he raises, I call.

River: 4

What now?

EDIT: sorry guys, i put a 2 down remembering it was a blank, but i did def not have a boat

Looks like a river c/r to me.