HU flop decision against myself

[Stefan_K]

I'm not very familiar with HU play against good players. Yesterday I found a deck of card and dealt to 6players and played every position myself.
Everybody folded to SB who raised, I 3beted with Q[img]/images/graemlins/spade.gif[/img]T[img]/images/graemlins/heart.gif[/img] my evil twin cap.
Flop A [img]/images/graemlins/heart.gif[/img]Q [img]/images/graemlins/club.gif[/img]2 [img]/images/graemlins/heart.gif[/img]
SB bets out, do i just fold second pair in a HU pot for one small bet given the preflop action or how do i proceed?