Home Game, FR, .25/.50 blind, AQ hits trips

[udbrky]

Buy-in is $10, UTG+2 and I have built it up, he just took a hit for half his stack against what looked like an obvious bluff.

UTG $3.50 is a loose, weak player
UTG + 2 ~ $50 is a TAG, thinking player who knows me well
MP $9 is an unpredictable player willing to call anything
Me ~ $50

All but one guy in front of me limps, I'm on the button, with AQo.
I think about raising, but decide to vary and limp. SB completes, BB checks.
Pot is $4.
Flop comes up A-A-4, two clubs.

Checks to UTG+2 who bets $10.
MP calls all-in for $8.50
I call, thinking I'm way ahead here, but wanting to evaluate the turn.
UTG calls all-in, rest of the table folds.

UTG+2's range after a limper is going to be 22-TT, ATs+, AJo+, but I'm cutting out AK since he didn't raise, and probably AQ. I think he would have raised to isolate against weak short-stack. Outside shot of QJ of clubs.

Pot is $33ish.
Turn is K of clubs.
We both check.
River's 8 of spades.

UTG+2 pushes.

I put him on 44 or AJ based on his play. I'm heavily leaning towards AJ.

I'm pretty sure he knows I've got AQ, because I hesitate before calling, and almost raised, I'm sure he noticed this. I'm a little worried about the flush, but not with the A and K on board. But, he has slow-played big slick pre-flop, then played it hard on the flop earlier in the night.

Hero ????