I was playing NLHE at a friend's house, and I checked the big bling with 7 9 o.

Flop comes 7 9 K, I bet about 3xBB, he calls, turn comes a K, and then I bet about 3xBB again and he raises way over me and I fold (He then showed me 6 10, confirming my fear that he bluffed me out of it. However, I really only had 2 pair.)

Should I have bet bigger on the flop to discourage that?