Do you understand?
There are many forms of abuse on this planet. People will hurt you, physically, emotionally, intentionally or unintentionally, throughout your life. Everyone is carrying hurt within themselves, inflicted by someone else. You cannot protect yourself from being hurt. You can built walls, you can become a hermit, you can make sure that you trust NO ONE. But, how is that working for you? You are not living your life, you are just existing.
If someone has left you broken, it has changed you, and there is a substantial amount of work involved in gluing yourself back together again. The person that has broken you is not the person to fix you. This must come from YOU. Leaving the situation is the starting point. Once it has gotten to the point of being broken, "sorry" will not fix anything. You will not go back to the way you were before.
Remember you can’t change anyone, don’t waste your time trying. Everyone is just who they are, and when they are not treating you the way you want them to, it is up to you to make a move. They are who they are, they love you or they don’t. You cannot “make” someone love you.
Walk away, start again... it is not easy, but your present situation isn't either. It takes courage to walk away. You do not need to understand them, you need to detach from them. It is the only answer, you cannot fix them, nor do they want you to. They will simply find another victim when you finally muster up the courage to get out. Trust yourself, love DOES NOT hurt.
Your life starts now! You are perfect, don't allow anyone to tell you different, you are important, and you are lovable. Follow your heart, listen to your inner voice and go where your spirit guides you.