Villain is running 22/9 over 30 hands. AF of 2.

$0.05/$0.1 No Limit Holdem
8 players
Converted at weaktight

Stacks:
UTG smitty48 ($4.03)
UTG+1 icemanxddd ($9.85)
MP1 ktisel ($5.42)
MP2 eromreve ($7.62)
CO newgosam ($10.49)
BTN Magictoast ($6.69)
SB mihai888 ($13.04)
BB Bane23 ($4.00)

Pre-flop: ($0.15, 8 players)
3 folds, eromreve calls $0.10, newgosam raises to $0.50, 3 folds, eromreve calls $0.40

Flop: ($1.15, 2 players)
eromreve bets $0.30, newgosam raises to $1, eromreve calls $0.70

Turn: ($3.15, 2 players)
eromreve checks, newgosam bets $2.60, eromreve calls $2.60

River: ($8.35, 2 players)
eromreve bets $3.52, ????

I guess this is a fold, or are there enough smaller pairs in his range to justify a call. Odds on the river are 3.3:1 .