I am sorry for what you went through, but do not blame yourself, he is the one who lost you and not the other way around, sometimes people get lost in their emotions and get pressured by norms, family and society, other times you might have been dealing with a narcissist but what you need to know is that you need to move on, forgive and forget, if he is not willing to sacrifice for you than he was not the right guy for you in the first place, true live is about respect and sacrifice, if those 2 factors are not there than it wasn't love, it was just a bunch of feelings accumulated, stop blaming yourself and learn from this experience, one day you will find the right person for you, it is a good idea to stay away from places that remind you of him in order to heal and rebuild, but true healing starts from within, start by forgiving him for what he did and most importantly forgive yourself for trusting him, and start rebuilding and loving yourself again, pamper yourself, you deserve it. Good luck and do not forget to know your worth and not to hold grudges because it will destroy you emotionally, forgive in order to help yourself and for your sake. Take care