Right i will start off by being honest im no good at cash, at least i dont think im any good.
i had been running well in stt and won a couple of multis in the last week, so i thought i would give cash a crack. I sit down at a $1/$2 table and put $85 to start with just to test the water. I played quite tight to start with just to suss the table out and it became clear that 1 guy was on the loose side. I dont want to go into details but i got it in with the best if it and he stacked me, not to be put off by this i put another $125 down and start again, i built this up to about $250 but managed to lose most of it to a guy chasing the flush on a paired bored.

.
At tis point i decided that was enough..... until this morning, i sat down with $40 at a $0.50/$1 table and this hand arose quite early.
Game #4021609744: Hold'em NL ($0.50/$1) - 2006/11/19 - 07:35:29 (UK)
Table "Brandnew" Seat 3 is the button.
Seat 1: mikey88 ($72 in chips)
Seat 2: Tony30124 ($100.50 in chips)
Seat 3: drengen22 ($90.25 in chips)
Seat 4: Jvedesous ($51.17 in chips)
Seat 5: wormy ($36.75 in chips)
Seat 6: hansengus ($80.63 in chips)
Jvedesous: posts small blind $0.50
wormy: posts big blind $1
----- HOLE CARDS -----
dealt to wormy [

]
hansengus: raises to $3
mikey88: folds
Tony30124: folds
drengen22: folds
Jvedesous: folds
wormy: calls $2
----- FLOP ----- [

]
wormy: checks
hansengus: checks
----- TURN ----- [

][

]
wormy: bets $3
hansengus: raises to $7
wormy: raises to $15
hansengus: raises to $25
wormy: raises to $33.75 and is all-in
hansengus: calls $8.75
----- RIVER ----- [

][

]
----- SHOW DOWN -----
wormy: shows [

] (Three of a kind, Fives, King high)
hansengus: shows [

] (Three of a kind, Kings, Jack high)
hansengus collects $71 from Main pot
----- SUMMARY -----
Total pot $74 Main pot $71 Rake $3
Board [

]
Seat 1: mikey88 folded before Flop (didn't bet)
Seat 2: Tony30124 folded before Flop (didn't bet)
Seat 3: drengen22 (button) folded before Flop (didn't bet)
Seat 4: Jvedesous (small blind) folded before Flop (didn't bet)
Seat 5: wormy (big blind) showed [

] and lost
Seat 6: hansengus showed [

] and won ($71) with Three of a kind, Kings, Jack high
now whats bothering me is obviously i tried to trap him lol, but once i lead out on the turn and he raises when i RR and he 4 bets it i straight away think he has KK and i still carry on and push. what i want to know is once he has 4 bet it should i get away in a cash game or is this when you just go broke and reload.
thanks in advance for your help and opinions.