Hi Stealthy-

You should have raised the turn. You have a strong but vulnerable hand, raise it and charge more for the flush draw, if someone's going for it.

River probably doesn't matter too much. Because you didn't raise the turn, you haven't represented a lot of strength here so it's probably a coin flip whether you should cap it or not. Expect to sometimes see a hideously overplayed KQ or something like that, often it'll be something like a rivered 77 or perhaps a set of 2s he hit on the flop. He may have a 6, and the question is, is his 6x lower than yours or higher?

So cap if you want to, doubt it matters but it might get you more action if you're planning on playing long term with this villain.