What hands would you fold here?

[Stuey]

Villian is 15 VP$IP 8 PFR 2.75 AF after 73 hands
Table is tight
Hero is 18 VP$IP 12 PFR 8 AF through 73 hands

Party Poker 1/2 Hold'em (9 handed) converter

Preflop: Hero is MP3 with ?,?.
<font color="#666666">1 fold</font>, <font color="#CC3333">UTG+1 raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">4 folds</font>, UTG+1 calls.

Flop: (7.50 SB) 7[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
UTG+1 checks, <font color="#CC3333">Hero bets</font>, UTG+1 calls.

Turn: (4.75 BB) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
UTG+1 checks, <font color="#CC3333">Hero bets</font>, UTG+1 calls.

River: (6.75 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">UTG+1 bets</font>, <font color="#CC3333">Hero raises</font>, UTG+1 folds.

Final Pot: 9.75 BB

Results in white below: <font color="#FFFFFF">
MP2 doesn't show.
Hero has ?,?.
Outcome: Hero wins 9.75 BB. </font>

If you are villian what hands do you consider folding here? and why?
What did hero have?