What Went Wrong Here?

[-Skeme-]

No reads. Should I have reraised on the flop? What the hell. I didn't bet the turn because I thought QTo was likely. I don't know, I got scared I guess. I was hoping to either fill or at least see a brick river and then make a decision on whether or not he actually has the straight. Advice is appreciated. Thanks.

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PokerStars No-Limit Hold'em, $1.00 BB (9 handed)

MP2 ($110.95)
MP3 ($95.80)
Hero ($100)
Button ($169.55)
SB ($104.50)
BB ($32.75)
UTG ($103.25)
UTG+1 ($103.55)
MP1 ($22.50)

Preflop: Hero is CO with 2[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/spade.gif[/img]. Hero posts a blind of $1.
UTG calls $1, <font color="#666666">3 folds</font>, MP3 calls $1, Hero (poster) checks, Button calls $1, SB completes, BB checks.

Flop: ($6) J[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(6 players)</font>
SB checks, BB checks, <font color="#CC3333">UTG bets $4</font>, MP3 folds, <font color="#CC3333">Hero raises to $12</font>, Button folds, SB folds, <font color="#CC3333">BB raises to $31.75</font>, UTG calls $27.75, Hero calls $19.75.

Turn: ($101.25) 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, Hero checks.

River: ($101.25) 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">UTG bets $70.5 (All-In)</font>, Hero folds.

Final Pot: $171.75</font>
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And is it just me, or is playing 2 pair extremely frustrating? Results later, although not that important.