That's the goal.
To erase the memories, to stop reminiscing the good times, to forget how his touch felt like, to erase the warm kisses because everything lingered. Everything stayed. Your love for him is carved in your heart and that part he took away from you.
I know you have tried everything. You discovered what the world looks like on the other side. You opened your deepest cut to your trusted friends. You allowed yourself to weep and cry on those lonely nights because you think, somehow, it would help
But,somehow, it didn't.
Time has passed and whenever he crosses your mind, you still feel that cold water poured on to your heart. And no matter how hard you convince yourself that it wasn't your fault, you still feel it is. You still feel that you weren't good enough, that you will never be good enough, that your love is not worth fighting for.
Like what they say, pain demands to be felt. If you keep diverting your mind and emotions and just try your best to ignore how you really feel, it prolongs the process. If you still feel the pain, then feel it. Cry for it. Do what your heart tells you to do. You will be okay but do not impose a deadline to your heart. Like all wounds, it takes time and it differs depending on how deep the cut is. It might be the hardest and longest time for you but trust me, being fully healed is better than being half or partially healed.
Listen to your heart.