Tell him that you will always lie to him from now on.
If he cannot live with that - leave.
Answer yes to all of his suspicions. Eventually he'll either see how stupid his attitude is or make you leave him. He has low self-esteem, he feels he does not deserves you and hence feel insecure. You cannot change him - only he can. But it's unlikely. Don't get down to his level, find the one who loves himself and you.
That has nothing to do with any former girlfriends lying. That has to do with him having mental problems. People who do stuff like that are dangerous. You might want to get away before you get hurt.
Dump hi,- thats milk that won't get any fresher
A terrible sign. He's just blaming it on the other gf. He's a person who wants to control you.
an accuser is really not healthy for a better relationship...