bet the flop, and raise again if it comes back to you. you want to make people pay for their draws, and those with a crappy hand from the flop can just tag along if they like.

Can't comment on the turn & river, except that I think you are beaten by the river, and betting out is a bad idea. I'm not sure if I'd even call. Two-pair is probably only marginally winning that pot enough to make it worth a crying-call.