I don't like this kind of situations. How to improve my line?

[swedeD]

No good read on villian. He is not particulary good or bad. A standard player. The problem is that I have been showing weakness and he can, maybe, be betting like this with just a pair of queens, like QJ (remember this is 6 max).

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) converter

CO ($79.4)
Button ($75.15)
SB ($149.1)
BB ($127.14)
Hero ($97.5)
MP ($145.96)

Preflop: Hero is UTG with K[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.5.
Hero calls $1, <font color="#CC3333">MP raises to $2</font>, <font color="#666666">2 folds</font>, SB (poster) calls $1.50, BB calls $1, Hero calls $1.

Flop: ($8) 4[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, <font color="#CC3333">Hero bets $5</font>, MP calls $5, SB folds, BB folds.

Turn: ($18) 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP bets $5</font>, Hero calls $5.

River: ($28) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP bets $10</font>, Hero ???