Manipulation it is. And here is something else I'll toss out there. Doubtful he was 10 years sober. We know that he has a pattern of lying. Yes I know breakups are tough but someone with 10 years sober should have way better coping skills by then. Someone sober a year? Probably not. Ten years and he couldn't find the tools to withstand the urge? It tells me that he probably relapsed quite a few times.
Don't feel bad AT ALL. Life is about ups and downs. He can't weather this has nothing to do with you. He relapsed (if he did) because he hasn't figured out how to deal with lifes ups and downs without using. Period. Has nothing to do with you or anyone else.