(KK)3 folds early

[MRBAA]

The train game -- $1-5 spread limit, $1-10 on the river, $1 ante, $1 bring in.

Loose aggressive type who is stuck and steaming a bit, but who is not nuts, makes it $3 to go with an Ace in the door. Loose but not horrible player calls with a jack, I call with (KK)3, bring in calls for $2 more.

4th street brings:

(xx)AT
(xx)JQ
(KK)39
(xx)25

The ace bets $5, the JQ calls, I fold. Good? Weak?