$100 NL have a monster flop but lose

[Nicefingcatch]

Full Tilt Poker, $0.50/$1 NL Hold'em Cash Game, 3 Players
LeggoPoker.com - Hand History Converter

BTN: $347.05
SB: $44.95
Hero (BB): $119.70

Pre-Flop: 9[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/club.gif[/img] dealt to Hero (BB)
<font color="red">BTN raises to $3.50</font>, SB folds, Hero calls $2.50

Flop: ($7.50) J[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/club.gif[/img] (2 Players)
Hero checks, <font color="red">BTN bets $5.50</font>, Hero calls $5.50

Turn: ($18.50) A[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">Hero bets $10</font>, BTN calls $10

River: ($38.50) 2[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">Hero bets $26</font>, BTN calls $26

Results: $90.50 Pot ($1 Rake)
BTN showed T[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] (two pair, Tens and Eights) and WON $89.50 (+$44.50 NET)
Hero showed 9[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/club.gif[/img] (a pair of Nines) and LOST (-$45 NET)



I know my betting sucks, but I would like for some help on how to bet the hand better such as how much should I have on the river to scare him away out of his two pair?