You can't hate and love at the same time.
^^^ Clearly has never had a girlfriend. ^^^
Obviously deduced by pure experience without any use of logic.
Which is good, as applying too much logic on a girlfriend might break her.
That usually feels like "It's the end of the world as we know it".
Making it back to topic ... uhm ... what did I want here?
p.s.
The opposite of love is indifference as it is of hate.