Time does have a healing effect. But, if you are trying to fall out of love with someone that is bad for you then you need to stay strong. I call them Toxic Relationships. I have had a few in my life. I will share one of the most resent experience with you.
I had to remove my older brother from my life. As much as this hurt me I understood that his judgmental and disrespectful outlook on me and my situations were toxic to me. That for me to be happy, I must remove him from my life. I still love him, he is my brother, but I must keep him out of my life.
Not knowing more about what's going on with you this is the best advice I can give.

Clemfan