cbet, valuebet, bluff?

[terp]

ftp 2/4 eff stax 100bb

villain is multitabling and playing fairly standard tag as far as i can tell. i am playing about 24/20 and haven't been caught doing anything out of line. he and i have not been involved in any pots beyond the flop, either.

i open 45o in the CO, he calls SB.

flop 752 [img]/images/graemlins/spade.gif[/img] [img]/images/graemlins/spade.gif[/img] [img]/images/graemlins/heart.gif[/img] ($30)

he c/c $22

turn 4 [img]/images/graemlins/heart.gif[/img] ($74)

he c/c $59

river 7 [img]/images/graemlins/diamond.gif[/img] ($192)

he checks...