preflop is good.

Flop I think I would still call once. Your right we sometimes dont get paid on 4th spade but he is playing 42/8 so far so we definitely can get paid if he has lower spade. However sometimes we dont need to hit a spade, we could be good still be winning since he might just stab this spot once checked to every time. Even with hand like 88 with a spade. We also have good equity vs Ax (11 outs) considering his stats he might check turn with this so we quite likely get to see 2 cards. 

I think you had good discipline here folding though, which is definitely a positive for micro stakes. well done for that.

Sollid preflop.

Flop sucks i think c/c might be fine w QQ with the spade, but i fold QQ no spade.

Would make it 1.30, but it's not a big deal. Definitely 3-betting for value. 36% and 42% is super high, so there is a ton of value.

This is a pretty gross spot, but I think you can peel once. A guy who is this loose really doesn't need to have an ace. He can be protection betting 5x/7x, 88-JJ, or semi-bluff any big spade. He only made it half pot, so you're getting good odds, and you have the second nut flush draw.
Had he bet the pot, I would have folded.

In a heads up pot versus either, there is no way you should fold the flop.

Good preflop

The postflop check/fold is illogical unless you check/fold your flush draws and open-ended straight draws. Unless villain has exactly Ks, you will have 9/8/7 outs to the nuts and a Q (+2 outs) may very well give you the best hand. So you have between 7-11 outs depending on villain's exact hand, which is roughly the amount of outs we routinely semi-bluff with with other hands.

Villain is betting just over half-pot, you getting almost 3 to 1 approx 25%

Villain is in position with a wide range and can definitely be stabbing once its checked to him.

I'm wondering about cbetting too in fact. What would you do if you had a low suited Ace here that isn't two pair? since villains routinely peel lower pairs with a flush draw you can be betting for value. its a merged cbet

yeah, I would c-bet as Daz mentioned need to protect your semi-bluffs hands .. and check turn

@Sorin I think the logic of c-betting to protect a semi-bluff range seems completely irrational at 10nl where 90% of the field don't have a clue whats going on and the player pool is massive. Also not sure why you would need to do this at any stake in this situation : only so villain doesn't have an easy call down with 88 - JJ with a spade which shouldn't be the case anyway vs our barrelling range of AA/AK/AQ and KsQx, KsTx type hands.

When cbetting we run the risk of getting raised off our hand, you are also betting into 2 possible strong hands but by checking we get to see both players act before its back to us so once UTG checks and button stabs only half pot we can like our hand a bit better and don't run as much risk of being bet off our equity.

Make it a bit bigger pre around 1.4-1.8. Flop c-bet. 

Well, what do we want them to do? Fold or bluff at the mono board? I think it's close. Given their ranges, there are SO many hands they both have that can't continue, so cbetting is going to work an overwhelming majority of the time, and I think you can be comfortable bet/folding. Check/calling is tough - given the odds he ended up giving you, you have pretty much the direct odds to call and bluff catch/ draw out. (Which is pretty safe - if he's ahead on the hand AND the draw, he could only have AxKs, and there're only 3 combos of that and he probably would have 3bet it OTB. Ok, or KK w/ the Ks, but he def. would have 3bet that.) Check/raising seems a little spewy, and check/folding this much equity seems way too weak and probably a leak. 

It would be illuminating to see their fold to cbet stats. If they're really sticky, I might x/c and hope to win/ steal it on later streets. If they're weak and fold a lot, this is the perfect flop to bet in a 3bet pot.