1/2 NL home game, 2 pair 3-handed (w/tells!)

[ChuckyB]

My NL game is super-rusty. Not that I was very good to start with. I love limit.
Anyway, 1/2 NL at a buddy's house. Down to 3 handed at the end of the night. I've never played a cash game with these guys. Only $10 tournaments.

Villain in this hand is a semi-loose player PF. He then tightens up under pressure post-flop. He understands poker a bit, but has never read anything about it. In past tournaments he's shown a lack of understanding of bet-sizing (couldn't figure out why I'd raise to 500 at 25/50 with 4 limpers in the pot. He called these kind of bets "outrageous".)
In tournaments if he raises pre-flop he'll almost always make a continuation bet. He will then back down in the face of pressure (unless he's short stacked).

Effective stacks $110

Hero is BB with 9 [img]/images/graemlins/club.gif[/img]4 [img]/images/graemlins/club.gif[/img]

Button calls, SB completes, Hero checks.

FLOP: 9 [img]/images/graemlins/diamond.gif[/img]7 [img]/images/graemlins/spade.gif[/img]4 [img]/images/graemlins/diamond.gif[/img] (pot: $6)
SB checks, Hero checks, <font color="red">Villain bets $8 </font>, SB folds, Hero calls.
<font color="green">Villain bet forcefully, and overbet the pot which was strange. I decided I would check-raise a non-threatening turn card (???). Maybe he's on a strong draw?(I have no evidence to back up that thought.)</font>

TURN: Q [img]/images/graemlins/diamond.gif[/img] (pot: $20)
<font color="red">Hero bets $15</font>, <font color="red">Villain raises to $35</font>, Hero...
<font color="green">As I think about what to do, (didn't expect his raise) I look at villain and I notice his heartbeat is going crazy. It's visible through his T-shirt near his armpit. He's looking off into the distance, won't look and me, and isn't moving much.</font>


Side question: In a 3-handed game, how big is two pair on this board?