Nut no pair good enough?

grantorino

Havent played much with villain, is loose but tends to be aggro and bets big when he bets. 

My image should be taggy, on the off chance he is paying attention

River action? Fold?Call?Raise?

Player	Action	Cards	Amount	Pot	Balance
SB	Small blind		£0.10	£0.10	£22.53
Villain	Big blind		£0.20	£0.30	£16.76
UTG	Sit out
	Your hole cards	K A
MP	Fold
grantorino	Raise		£0.60	£0.90	£42.97
BTN	Fold
SB	Fold
Villain	Call		£0.40	£1.30	£16.36
Flop
		3 J 5
Villain	Check
grantorino	Bet		£0.80	£2.10	£42.17
Villain	Call		£0.80	£2.90	£15.56
Turn
		5
Villain	Check
grantorino	Check
River
		Q
Villain	Bet		£2.90	£5.80	£12.66

BigBluster

The full pot bet is clearly either the goods or a stone-cold bluff. Whatever it is, many players who make full pot bets OTR do it pretty consistently. It might be worth paying £2.90 for this information even if he has the 5. 

ScotsLion

After you checked on the turn you have shown some weakness.  Possibly putting you on a mid strength ace; A9 etc.  I think he stole the pot from you maybe more likely here.  possible hand maybe 67 suited and only way to win is bet big.