I'd only played four hands against this guy, but he'd not done anything crazy so far. I think my only options are push or fold. It looks like he's fairly confident he's got me beat, and I've defined my hand pretty well. What do you guys think - too weak?

Paradise Poker No-Limit Hold'em, $1 BB (4 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($297.35)
Button ($349.05)
SB ($181.15)
BB ($89.65)

Preflop: Hero is UTG with A, K. SB posts a blind of $1.
Hero raises to $8, Button calls $8, SB (poster) calls $7, BB calls $6.

Flop: ($32) K, 6, 2 (4 players)
SB checks, BB checks, Hero bets $30, Button folds, SB raises to $85, BB folds, Hero folds.

Final Pot: $147