Unraised pot, small set on a draw heavy board

[Nate_Dogg]

Big blind is a solid player, LP is terrible and chases draws like there's no tomorrow.

Full Party table $1/$2 blinds
LP has $100, BB has full stack, I have both covered

folded to LP who limps, I limp on the button w/ 3h 3c, Big blind checks

Flop is 7s 3s Td

Big blind checks, LP bets $9, I raise to $30, big blind flat calls ????
LP pushes all-in for $90 --- What should I do here ?