The opposite of love is not hate, it is apathy

For purposes of discussion we are talking about someone you cared for in the past like an exgirlfriend. 

Think about it.  What is the opposite of love ?  Hate is actually just another face of that love.   In the case of normal situations the opposite of love is apathy. 

I know this is true from experience.  Study yourself long enough and you can do nothing but agree.  It is based on the laws of physics.