$100 NL - AK - questionable flop call gets me into trouble?

[Sneds9]

Party Poker
No Limit Holdem Ring game
Blinds: $0.50/$1
6 players
Converter

Stack sizes:
UTG: $76.95
UTG+1: $126.70
Hero: $98.50
Button: $95.05
SB: $81.40
BB: $100

Pre-flop: (6 players) Hero is CO with K[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/diamond.gif[/img]
<font color="#cc0000">UTG raises to $2</font>, UTG+1 calls, <font color="#cc0000">Hero raises to $7</font>, 3 folds, UTG calls, UTG+1 folds.

Flop: 5[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] ($17.5 2 players)
<font color="#cc0000">UTG bets $11</font>, Hero calls.

Turn: A[img]/images/graemlins/spade.gif[/img] ($39.5, 2 players)
UTG checks, Hero checks.

River: 8[img]/images/graemlins/heart.gif[/img] ($39.5, 2 players)
<font color="#cc0000">UTG bets $25</font>, Hero calls.

Results:
Final pot: $89.5

Villian is 44/15/5 over 150 hands

I think my flop call was very very bad. Villian had lead into me a couple of times before, but it just seemed to be so weak/tight to be folding here after 3betting pf.

I catch an A on the turn and it's checked to me. I consider betting, but I'm not sure how comfortable I feel betting here after the flop lead. I opt for pot control because I only have TPTK, but intend to call any resonable bet on the river, avoiding any disasterous cards.

So yeah, I kinda snap call the river. Could I have some comments on this hand on all streets. Thanks.