There are certain conclusions that I have drawn regarding men women and I am making the generalized observation in accordance with my perception of how the men women world is working. The understanding could be most useful when the two worlds meet.
Men have to a varying degree 'the sadistic instinct'probably provided by nature (could be the effect of testosterone which only biologists could confirm or find out)so as to become the agressor in procreation..to inflict pain if required to attain pleasure.
Women are made out to be more or less dreamers and self lovers again to varying degrees which possibly is also a hormonal effect..so that there is 'strutting' and seeking for appreciation though it might require or result in pain.
These nature endowed factors in both, though help in procreation are blocks in the spiritual search for true love. The 'body' thus may be obstructing the experience of true love.
These factors in men lead to love taking backseat and pleasure front seat even if it be often tinged with sadistic pleasure. In women these factors could lead to insecurities and jealousies taking precidence over unconditional love. Depending on the Yin Yang ratios, both men and women may have these blocks in the ratio of their own Yin Yang.
That is why physical love is shallow where the soul stands away as a mute spectator.The spirit needs to rise above these 'bodily' or physical blocks to unleash the experience of true love. Only when the two can come together out of spiritual love alongside the physical (or which generates the physical)..can the bonding be complete..awakening true love and true happiness in both the participants and enriching the spirit. In such a bonding the soul participates and only then do two really become one enriching each other in the meeting.