Soul.Searching my way back.

[FloydMan]

I don't agree with the scale approach as something either is, or isn't. Like either the light is on or it is off. On and off are opposites even if the dimmer is halfway, the light is still on. Can't be a little on or off. Or being pregnant. One cannot be a little pregnant. Either you are or you are not independent of where you are in the term.
So, love and hate are feelings/emotions. Indifference is not having any feeling or emotion at all.
So when one is in love or hate, those are emotions and stem from the same part of the brain which triggers similar responses to each other. Indifference is devoid of any feeling so it is the opposite of love. On or off.