100nl couple of hands.

Player was 27/2/.56 with flop aggression 0.5 over 100 hands. He was a calling station but I have never seen him raise before. Am I stupid for folding this? Usually I would get it all in but I haven't seen as passive a player like him.

Poker Room skin
No Limit Holdem Ring game
Blinds: $0.50/$1
5 players
Converter

Stack sizes:
UTG: $9.00
Hero: $108.90
Button: $166.30
SB: $80.65
BB: $64.20

Pre-flop: (5 players) Hero is CO with K :diamond: K :heart:
UTG folds, Hero raises to $4, 2 folds, BB calls.

Flop: 5 :heart: 8 :diamond: 4 :heart: ($8.5, 2 players)
BB checks, Hero bets $6, BB raises to $20, Hero folds.
Uncalled bets: $14 returned to BB.

Results:
Final pot: $20.5

I didn't have many reads at this stage but his line made no sense to me. I could/should have raised the turn but weak leads like that can mean monsters. Would you call the river push?

Poker Room skin
No Limit Holdem Ring game
Blinds: $0.50/$1
5 players
Converter

Stack sizes:
UTG: $63.05
CO: $98.65
Hero: $100.40
SB: $61.30
BB: $23.00

Pre-flop: (5 players) Hero is Button with Q :club: A :club:
UTG calls, CO calls, Hero raises to $6, SB calls, 3 folds.

Flop: 3 :spade: A :spade: J :diamond: ($15, 2 players)
SB checks, Hero bets $12, SB calls.

Turn: 6 :heart: ($39, 2 players)
SB bets $4.5, Hero calls.

River: 2 :club: ($48, 2 players)
SB is all-in $38.8, Hero ??

Lets start with hand two.

You only beat an idiot here, and at that, and idiot who can only have AT or worse. I fold. You do need to use the turn to define things a little more clearly, but as it turned out, he shows you exactly where things are at on the river.

Hand one, it would be tough for anybody else to give you advice/validation. You can obvisouly play it the standard way, or you can trust your stats. I am sure some people will be upset about how it was played, but if the situation was as it was, and he really wasn't raising anything, and you feel like his range wasn't just any over pair, then I guess you are the onlyone who can really know that for sure based on the info that is present.

I am ok with it if you are in this spot.