AA that started innocuous

[Dustangel]

Poker Stars
Limit Holdem Ring game
Limit: $0.10/$0.2
10 players
Converter

Pre-flop: (10 players) Hero is SB with A[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/club.gif[/img]
UTG calls, UTG+1 (poster) checks, 2 folds, MP2 calls, MP3 folds, CO calls, Button folds, <font color="#cc0000">Hero raises</font>, BB calls, UTG calls, UTG+1 calls, MP2 calls, CO calls.

Flop: 2[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/heart.gif[/img] (12SB, 6 players)
<font color="#cc0000">Hero bets</font>, BB calls, 2 folds, MP2 calls, CO folds.

Turn: 7[img]/images/graemlins/heart.gif[/img] (7.5BB, 3 players)
<font color="#cc0000">Hero bets</font>, <font color="#cc0000">BB raises</font>, MP2 calls, Hero calls.

River: 8[img]/images/graemlins/diamond.gif[/img] (13.5BB, 3 players)
Hero checks, BB checks, MP2 checks.

Results:
Final pot: 13.5BB

BB is 44/8/1.3 over some 50 hands, I have less than 10 hands on MP2, and no special reads on both.

I'm pretty sure noone would question preflop and flop play, so my question is whether I made any mistakes on turn and river, when the board became complicated?

My argument at that time was that BB woke up just about time when the board started looking really straight-ish or two pair-ish and I can't really tell whether he is WA or is semibluffing on a straight-flush draw. Or maybe I suffer from MUTB syndrome and should have raised just because we have MP2 dragging along?