Two $.5/$1 Party Hands

[el_grande]

Appreciate your input. Here goes...

Hand 1

I'm 2 from the button with A [img]/images/graemlins/diamond.gif[/img] T [img]/images/graemlins/spade.gif[/img]

1 MP caller, I call, CO calls, button folds, SB folds, BB checks

Flop: 5 [img]/images/graemlins/spade.gif[/img] 3 [img]/images/graemlins/spade.gif[/img] A [img]/images/graemlins/spade.gif[/img]
BB bets, MP raises, I 3-bet (bad?), CO folds, BB calls, MP calls

Turn: 4 [img]/images/graemlins/club.gif[/img]
Everyone checks

River: 6 [img]/images/graemlins/diamond.gif[/img]
BB bets, MP raises, I fold

Comments? I need some guidance on this hand.

Hand 2

I'm in UTG+1 with A [img]/images/graemlins/diamond.gif[/img] K [img]/images/graemlins/heart.gif[/img]
UTG folds, I raise, everyone folds except for CO who calls

Flop: K [img]/images/graemlins/club.gif[/img] 8 [img]/images/graemlins/diamond.gif[/img] 9 [img]/images/graemlins/diamond.gif[/img]
I bet, CO calls

Turn: 7 [img]/images/graemlins/club.gif[/img]
I bet, CO calls

River: 9 [img]/images/graemlins/heart.gif[/img]
I bet, CO calls

Seems straightforward, but he turned over AA.
Have you seen anyone play AA like this heads up? I guess there's nothing you can do about it. The guy had done some pre-flop raising before so it was really strange.