Duality is caused by the gender & polarity of energy vibrations.
The energy of love is a vibration whose wavelength can be divided by male & female gender, with a frequency that can be divided by positive & negative polarity.
Love & Need is a duality of the female gender that values comfort & relaxation.
Love & Sex is a duality of the male gender that values stimulation & arousal.
When Love is divided by gender it is known as eros.
Love & Lust is a duality with a positive polarity that values excitement & achievement.
Love & Hate is a duality with a negative polarity that suffers annoyance & irritation.
When love is divided by polarity it is known as philos.
In a co-dependent relationship it is not uncommon to experience from time to time all four dualities of Love.
A partnership may share the experience of comfort, relaxation, excitement, arousal, stimulation, achievement, annoyance or irritation.
A pure Love that is without duality is called Agape.
Agape is a vibration of Love that is connected, neutral, balanced, unified & harmonious.