Can You Ever KNOW Someone Has Aces?

I'm going back to my grassroots, playing NL Hold'em on UltimateBet and FullTilt. I dropped 25.00 on Fulltilt two days ago, in a frustrating session where I ran my QsQd into 8s9s on an all spade flop. Sometimes, a raise preflop doesn't matter, and a LAG player is always going to call with that hand in LP. And it's the kind of flop you've got to be aggressive with, as to not give a free card to As-rag. I didn't suck out. Then later on I finished 12th in a NL Hold'em tourney where top five paid. I got it all in with Q9 when I pushed on the button. 33 called in the BB, and I was racing with a chance at an average stack. The board ran out 7-Q-K-Q...3. Brutal.

Yesterday I put in a good session where I doubled my stack, many of the chips coming from a hand where I raised in MP to 1.25 with KK, and the guy immediately to my left pushed. I called and his AJ's 3 outs didn't come.

Today I hit up Fulltilt, and played a solid two hour session. I felt just dead on today, most of my reads were stone cold correct. As far as results go, I more than quintupled my buy-in, and I'm damn happy about that. However, half of that came from a hand where I got it all-in with KK v. AA and sucked out. I think God owed me that one.

http://www.pokerhand.org/?1434584

It's a small pot, but I made a sick call.

http://www.pokerhand.org/?1434588

Best call I've made in quite some time- I thought FOREVER before making this one. It's one thing to donk call the LP's bet with 99 here, but it's a different monster entirely to do it after EP flat calls.

http://www.pokerhand.org/?1434591

This may be the first time in my life where I came across a situation where I perhaps could have KNOWN that my opponent had aces. I couldn't fold preflop despite reading strength at every possible opportunity. I played KK very weird- I limped, and then made a smallish raise after the SB made it 1.50 to play (which is a raise not only out of position, but also of very suspiciously small size). I showed immense strength by limp-re-raising, and he showed even more strength by pushing to that re-raise. I maybe could've folded... I was pretty sure he had AA. But, alas, I called and rivered a K. I'm not too unhappy about it. What would you have done here? Respond in the comments.

-The Gerk-