"Our relationship has always been toxic." That is all I need to know. You will not change anyone. EVER. If the relationship is toxic, get out.

There are billions of people on this earth, you do not have to put up with a toxic relationship. He says you are "his one and only." That is absurd and he is manipulating you.

If you *want* to be with a man that subjects you to "lies, cheating, mental abuse, insults" by all means keep getting back together with him.

Change your number and/or block him on your phone and social media accounts.