EDIT: Ignore the title of this thread. I was going to post a different hand but decided on this one instead. Make it "Overpair facing river aggression"

Villain is 65/22/1.2 over 60 hands. I wanted to call a busted draw and was greeted with a PSB. Easy fold?

Full Tilt No-Limit Hold'em, $1 BB (6 handed) Full-Tilt Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

BB ($151.35)
UTG ($55.25)
Hero ($232.20)
CO ($124.30)
Button ($122.05)
SB ($171.05)

Preflop: Hero is MP with T, T.
1 fold, Hero raises to $3.5, 3 folds, BB calls $2.50.

Flop: ($7.50) 5, 4, 7 (2 players)
BB checks, Hero bets $5.5, BB calls $5.50.

Turn: ($18.50) 5 (2 players)
BB checks, Hero bets $13, BB calls $13.

River: ($44.50) Q (2 players)
BB bets $44, Hero?

My first thought was a busted flush draw with a Queen.

Someone who is better tat interpreting Pokertracker numbers tell me, what does the AF of 1.2 mean?

If he is aggressive on the river I might call, if he is generally passive I fold.

Does villain have a history to indicate he'll pay to chase draws? Or that he'll and throw a PSB at a missed draw? Without a read I'd let this go.

I see this move a lot on full tilt at this level. Normally a bluff b/c of a missed draw.

His aggression factor is so low that I'd dump this here.

I let this go. I dont see that bet being bluff and a bluff is all you beat there.