Shoulda gone with your gut and stayed off of facebook.
It was five years ago, he stored your Jeep for free for a while (How long did you leave it there?), you left him the keys and probably didn't tell him NOT to drive it, and the poor guy was dating a Hairless Squatch.
Mention that you busted him, he owes you a beer or two, and forget it.
PS-His ex-Squatch probably put it there for you to find so you would get pissed at him.