Hey CBrown. I agree with Prodigal.
Wieght loss is nice, but it's not your biggest problem right now. Niether is what he did or didn't do, and wether you have "the dirt" on him.
He won't seek recovery until the pain is great enough. If he's rich, he may be able to avoid any consequences for a looonnngggg time.
Get yourself into recovery first and foremost before you go insane. Work on YOU. Forget about him.