According to Osho, love and enmity are not true opposites; both are forms of attachment that keep you psychologically tied to the other. They easily flip into each other because they share desire, expectation, and ego. The real opposite of love is indifference. Through meditation and awareness, you move beyond this duality: enmity dissolves, and love becomes a free, non-possessive compassion—relating, not relationship.
Love and hate both cling to someone; with calm awareness you drop hate and let love be kind and free.