Am I ever calling river with top pair?

[PwnSauce]

Villain is 62/9/3

Full Tilt Poker
No Limit Hold'em Cash Game
$0.10/$0.25 Blinds
5 Players
LegoPoker HH Converter

SB: $27.20
<font color="black">Hero (BB): $36</font>
UTG: $74.70
CO: $32.05
BTN: $31.60

<font color="black">Preflop:</font> Hero is dealt J[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/club.gif[/img] (5 Players)
UTG folds, CO folds, BTN calls $0.25, SB folds, <font color="red">Hero raises to $0.85</font>, BTN calls $0.60

<font color="black">Flop:</font> ($1.45) A[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">Hero bets $1.30</font>, BTN calls $1.30

<font color="black">Turn:</font> ($4.05) 7[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">Hero bets $3</font>, BTN calls $3

<font color="black">River:</font> ($10.05) K[img]/images/graemlins/diamond.gif[/img] (2 Players)
Hero checks, <font color="red">BTN bets $6.25</font>, Hero ...

Can I ever call here, I bet two streets and got called so FD is a large part of his range here along with many pairs. But essentially only FD are betting into on riv I'm guessing. Lets hear your thoughts.