NL 100 on Pokerroom

No real reads on villian...I think I should have pushed on the river, but I wasn't sure about how much fold equity I had duie to his stack size. Thoughts on all streets welcome.

Hand 1621547945, Started at 12/22/2005 9:24 PM
Table 'Bradford': $1-$1 No Limit HE (Real Money)

Seat 0: Villian($116 in chips)
Seat 6: Villian 2 ($90.10 in chips) (on the button)
Seat 8: Hero ($134.50 in chips)

*** Blind Bet Round *** :

Dealt to Hero: As 3s
HeartOfGold. : Post Blind ($0.50)
Hero : Post Blind ($1)

*** Pre-Flop *** :

Villian : Bet ($3.50)
Villian 2: Call ($3.50)
Hero : Call ($2.50)

** Flop *** : 5d 4s 9s

Hero : Bet ($8)
Villian : Raise ($20)
Villain 2 : Fold
dougfood27 : Call ($12)

*** Turn *** : [ 5d 4s 9s ] 8d

Hero : Bet ($25)
Villian : Call ($25)

*** River *** : [ 5d 4s 9s 8d ] 6c

Hero : Check
Villian : Bet all-in ($67.50)
Hero : Fold

*** SUMMARY ***

Pot: $166.50 | Rake: $2
Board: [ 5d 4s 9s 8d 6c ]

Villian bet collected $166.50, net $50.50
Hero lost $48.50