1-2NL Tropicana, WTF do i do here?!

[King Elliot]

1-2nl tropicana AC,

i hold kjo in late position, i limp , bb raises to $15, a consist player whom ive played against regularly, not too flashy but solid... idiot to my right calls, i call.... $50 pot....

flop j98
raiser makes it 25...idiot calls...i call.....
pot $125

turns 3 with a rainbow board

original raiser bets a mere $25 again, idiot calls...i debate raising but tell myself that i can call one more $25 bet on the river and would be happy to see the results...

river: king

original raiser makes it 25 again... idiot does a 30 second speech about what everyone has and why and proceeds to call...i debate for a minute.... i have about 300 left in front of me...original raiser holds about 230...whats your move?