How would you have played this maniac?

[IIAce]

Ok I'm sitting with this guy who is just a huge maniac and I played two hands against him after which he left. Here's what happened:

First hand I have QQ, I raise preflop and he reraises me. Everyone folds and I call (HU).

Flop comes 10 4 x, he bets, I raise, he reraises, I cap, he calls. Turn comes a 10 and he bets again, I get scared and just call. River is a 4 and he bets, I call. He turns over 45o for the full house and takes the pot.

Exactly two hands after that, I get KK. I raise and he reraises me again, I cap, he calls. Flop comes 10 3 x. We both cap the flop. The turn is another 10...we cap again. River is a blank and we cap. He turns over 10 3 for the full house and takes the pot.

I really don't know how to play against guys like that...any advice would be appreciated.