These Three Things I Lost: 80 Years, my Desire and One Ring

[Boromir88]

"I tamed him through withholding water and food." Be good, get a treat; be bad and get no fish to eat or something.

Or more like hungry because Aragorn had him gagged and on a leash. But, yes I imagine his treatment wasn't the mauling that Faramir's men gave (in the movies), as Faramir ominously stands in a dimly lit cave watching and looking all evil.