No wonder I keep losing

[HOWMANY]

5 handed 60/120 game. Game was 3 handed for a while and just became 5 handed. Villain is Roc. He knows how I play against others and against him, he knows I know how he plays etc etc. I am fairly sure that I should have folded every street here. The river is probably the most profitable decision (or least unprofitable) I made all hand.

I open UTG with 3[img]/images/graemlins/diamond.gif[/img]3[img]/images/graemlins/club.gif[/img], Roc 3bets from small blind, I call and pot is HU.

Flop Q[img]/images/graemlins/club.gif[/img]J[img]/images/graemlins/spade.gif[/img]7[img]/images/graemlins/club.gif[/img]

He bets, I call. Maybe he has AK.

Turn: 8[img]/images/graemlins/spade.gif[/img]

He bets I call. I hate money.

River: 5[img]/images/graemlins/spade.gif[/img]

He bets I call, I'm in too deep now.