Okay zmej let me see if i can do this better. UTG+1 is unknown, hasn't played many hands at the table. The BB is the villian who has been playing his draws aggressively and playing too many hands. He has built his stack up with lucky catches.
SB $50
BB $130
UTG $50
UTG+1 $50
CO $50
Hero $100
Preflop
All folded to UTG+1 who calls .50, Hero raises to 2.50, BB calls, UTG+1 calls 2.
Pot = 7.25
Flop
BB bets 5.00, UTG+1 folds, Hero raises to15.00, BB raises to 25.00. Hero does what? I decided to call.
Pot = 67.00
Turn
BB checks, Hero does what? I decided to bet 65.00