Bottom 2 pair vs pf raiser... his quick calls are worrying me

[robinmbuk]

NL25 6 MAX

Hero, SB: $35
Villian, BB: $17

Villian is so new to the table that I'm yet to get stats / reads on him.

UTG limps, MP limps, Hero completes with 6[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/club.gif[/img], Villian raises to $0.75, UTG calls, MP calls, CO folds, BTN folds, Hero calls.

Flop: 4 players, $3: Q[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] 6[img]/images/graemlins/spade.gif[/img]
Hero bets $2.70, Villian insta calls, UTG and MP fold

Turn: 2 players, $8.4: K[img]/images/graemlins/spade.gif[/img]
Hero bets $6.75, villian insta calls [img]/images/graemlins/crazy.gif[/img]

River: 2 players, $21.90: 2[img]/images/graemlins/diamond.gif[/img]
Hero bets $8, Villian calls (allin).

This isn't a great hand in the SB, but UTG and MP seem like bad, overly loose players, and I think this hand plays well multiway, but I am OOP. Maybe should fold pf, but meh.

On flop he could easily be calling me with a hand like KJ or A:diamonds: K:diamonds:.

On the turn I am a bit wary... KQ now beats me, and if he just called with a hand like AQ, shouldn't the king scare him. It worries me that he is just insta calling me here. On the river I figuret that if I check he's gonna shove any hand that beats me and I'll have to call. If I check he might check behind with hands I beat like KJ, so I lose value, so all I can really do is (effective) shove this river.

Thoughts?

[robinmbuk]

Anyone?