You know you're still ahead on the flop. When you're ahead your main concern should be to get as much money in the middle as possible. Always. Because you stand to win the money in the pot and every single chip you can manage to get into the pot is +EV.
And it worked great here. Your bet induced a semi-bluff all-in from a guy that's only 40% to win the hand.

I'm very happy whenever I manage that. Even when he gets lucky and hits his draw.

Thinking about how you can get away from the hand if he somehow manages to suck out is way too weak, IMO. Because when you do that, you're also giving your opponent a chance to get away if *he* loses. And he's more likely to lose than you are.

So my advise is to try to play against your roommate as much as you can [img]/images/graemlins/smile.gif[/img]