why are you trying to induce a bluff as if you have a made hand? unless, you know you can drastically outplay him on later streets, this is not wise. take the pot now. if he even has a 5 he has u beat, not to mention pocket 2's etc... Sometimes we have to avoid being our own worst enemy and overthinking the situation. We don't ACTUALLY know his cards. If he had a pattern of betting as you stated and you wanted to check raise him, that's fine, but there you are talking about higher risk, high reward (you have to accept the consequences if it doesn't work). Take the pot down now, don't try and get too fancy.