NL100 2nd pair vs donk, line check

[ronitonline]

Full Tilt Poker - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker Hand History Converter)

RONIT (SB): $116.95
BB: $157.40
UTG: $97.50
MP: $97.50
CO: $92.50
BTN: $98.50

Reads: <font color="blue">44/24/16 over 30 hands, obv we don't have very many hands but he seems like a huge donk.

Hows this hand? Main question is, should I raise Preflop?</font>

Preflop: RONIT is dealt T[img]/images/graemlins/spade.gif[/img] A (6 Players)
2 folds, <font color="red">CO raises to $3.30</font>, BTN folds, RONIT calls $2.80, BB folds

Flop: ($7.60) 5 J[img]/images/graemlins/heart.gif[/img] T (2 Players)
RONIT checks, <font color="red">CO bets $5.00</font>, RONIT calls $5.00

Turn: ($17.60) 3[img]/images/graemlins/spade.gif[/img] (2 Players)
RONIT checks, CO checks

River: ($17.60) 6 (2 Players)
RONIT checks, <font color="red">CO bets $10.00</font>, RONIT calls $10.00

Pot Size: $37.60 ($1.85 Rake)