Most Helpful Guy
You may be dealing with somebody who has sociopathic tendencies are is just a grade-A d***head.
Consider yourself lucky be out of a relationship with such a person. And guys will say anything to avoid a conflict or argument which is why he used the word 'perfect'. But there is no such thing as 'perfect' in nature, it is an imaginary concept, so him using that word is itself suspect.
Just don't beat yourself up over this by asking yourself "what did I do wrong?" just learn from this experience, take some time out, forget him and move on.