3-suited flop +set

[Rogue5]

here's a hand that got me thinking
I've been on a hell of a cold streak at 1/2, bad enough to make me want to search harder for mistakes in my game. (also the reason this is a .5/1 hand)

how hard should I be pushing when the flop is 3-suited?
my read on the guy was that he was a typical loose passive party player.

Party Poker (9 handed) converter

Preflop: Hero is BB with 4[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/heart.gif[/img].
<font color="#666666">EP2 calls, 1 more LP caller</font>, Hero checks.

Flop: 4[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
I bet, was raised by EP2, everyone else folded and I made it 3, he then called.

Turn: T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
I bet out the turn and he called
I am reassured

River: T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
I was pretty happy to see that T, I bet, he raises (?) then I called. should I reraise? his raise made me fear he had a better boat, should I reraise for value and then just throw something if he has the better boat?

looking back, it seems like I was throwing money into a somewhat small pot, when there was a good chance I was already beaten.