Ouch! One of the downsides about letting the ex in on the sitch...
I wouldn't be so drastic as to say the R is over now. He might be angry at you, but this could be a way to project his anger onto something else -- after all, he's the one who lied about that stuff, not you. He will know, deep down, that it was his fault.
My advice: don't divulge anymore to the ex. Obviously, she can't be trusted to keep a lid on things.