What can transform love into hate?

The truth is, you can't always differentiate between love and hate. Emotions aren't so black and white; they're more like complex cocktails served at mixology bars — lots of different ingredients blended together to make one unique emotion.Love and hate are distinct rather than opposed experiences: they are similar in certain aspects and dissimilar in others.

Love can become a fertile ground for the emergence of hate. When the intensity and intimacy of love turns sour, hate may be generated. In these circumstances, hate serves as a channel of communication when other paths are blocked, and it functions to preserve the powerful closeness of the relationship, in which both connection and separation are impossible.

• One primary reason can be expectations. When we love someone we expect them to reciprocate the same. We expect many things from him/her. When it don’t meet the expectations it creates issues.
• Any relationship is based on mutual trust, ones the trust is broken love turns to enmity and hatred. You may still love the guy, but hate him at the same time for breach of trust.
• As you love the person you become vulnerable. The Lover can let control your feelings.
• Sometimes we become possessive and try to control the person. This affect the freedom of the person and indirectly he/she starts hating you. We want to be taken care of and yet can resent anyone who cares for us
• Making a relationship work entails compromise and sacrifice. Not everyone does this willingly. The priority will be to impress him/her. But it is not the real you, so in due course this create irritation within oneself. It leads to hating the guy whom you ones loved so deeply.
• Sometimes we pick partners with flaws about which we can complain but which allow us to remain psychologically distant. As we want to love and be loved, but don't want to be hurt again, many settle for a version of what satisfies us. It .can keep us protected. Dissatisfied, but protetced.
• Ego clashes is another reason. Each one try to dominate over the other, nether won’t be ready to compromise. We want the person to fit the image of our ideal partner which causes the friction.

If you interpret that love/hate cocktail as primarily love, then you will hopefully learn from the experience, grow as an individual and continue the healthy relationship.

If, on the other hand, you interpret the emotions as under the umbrella of hate, then you're likely going to deny yourself love and instead break things off.