[88please]

Really looks like villian (tight, raised in early position and has five bet a drawy board) has an overpair, or maybe a set. We're basically a wash against that range TT+,88. If villian has a bigger flush draw we're dominated AKc, AQc, KQc, but it seems unlikely that the semi passive guy would go to war with one of those holdings. I'd say throw in another raise if you think there is any chance he'll call and check the turn (is AT in his range here?), otherwise just call the fifth bet.