All aspects of energy have a positive and negative - think like a magnet.
The male and female are the positive and negative aspects of biology.
In Tantra, they go deeply into sex as a method for spiritual awakening, the two energies meeting can create a realization of oneness - in this, your statements are perfectly right.
Understand though that the point is not the merging of the opposites, it is what arises from their merging.
Soul and spirit are another aspect of this, certainly, but oneness remains the point.
God and man, another aspect.
Object and subject, inner and outer, hot and cold, up and down, left and right, heart and mind...
When all come together, what is the result?
Do not answer, find out - remembering these are all aspects of energy, represented in the world, but also present in us, thus you don't need other to find out.
I believe that each of us has an opposite somewhere that is one with our spirit and soul. The body seeks to merge with the opposite. I believe that everyone was one with their opposite in the beginning but that there was a split which caused the soul and spirit to separate from the bodies and caused mortality. I believe in order to gain infinite life you must reunite with your opposite. I believe you can gain eternal life alone but also that eternities are measured. I did a lot of research on tantra and that it is a way of tapping into ones opposite. I also studied chakras and the points located in the bodies for union of soul and spirit with body. It was very interesting. Have you done any studies on this subject?