What to do on the turn

1-2 NL at B&m casino here in town. Hero is in BB in seat 8. Villian is in seat 1. Villain is loose passive and has a lot of gamble in him. Will call normal raises with just about any two cards.

Hero dealt: J [img]/images/graemlins/diamond.gif[/img] 9 [img]/images/graemlins/diamond.gif[/img]

UTG+1 raises to 8, UTG+2 calls, Villian calls, MP2 calls, CO calls, Button calls, SB calls, Hero calls.

At this point I had approx. 240 in front of me. UTG+1 had 160ish, & MP1 had about 260.

Flop: 7 [img]/images/graemlins/spade.gif[/img], 8 [img]/images/graemlins/diamond.gif[/img], 10 [img]/images/graemlins/club.gif[/img]

Hero bets 30
UTG+1 folds,Villian calls, all fold

turn 7 [img]/images/graemlins/heart.gif[/img]

Hero hero bets 70
Villain pushes all in
Hero?

[yvesaint]

bet more on the flop thats 30 into a 64 dollar pot

just get it in on the turn, probably has a 7

[Big_Jim]

Instacalls?

Oh yeah.... your flop bet is weak, make it at least 2/3 pot.

I realized after I made the bet that it was a little weak. Villian obviously has a 7 but what hand does he call with that has a 7 in it? Or is that over thinking the problem?