They do not love that do not show their love.
The course of true love never did run smooth.
Love is a familiar. Love is a devil.
There is no evil angel but Love. ---William Shakespeare
Loving Couple by wallyg
I find this quote from Joseph Campbell's "Hero with a Thousand Faces" to be a wonderful description/instruction for a successful marriage of yin and yang, or lover and beloved. Keep in mind we are talking mythology, metaphorical embodiment of higher concepts.
If the wording presents a problem, replace the word 'woman' with the the concept of the feminine, the yin, and replace masculine phrases with yang.
"Woman, in the picture language of mythology, represents the totality of what can be known. The hero is the one who comes to know. As he progresses in the slow initiation which is life, the form of the goddess undergoes for him a series of transfigurations: she can never be greater than himself, though she can always promise more than he is yet capable of comprehending. She lures, she guides, she bids him burst his fetters. And if he can match her import, the two, the knower and the known, will be released from every limitation. Woman is the guide to the sublime acme of sensuous adventure. By deficient eyes she is reduced to inferior states; by the evil eye of ignorance she is spellbound to banality and ugliness. The hero who can take her as she is, without undue connection but with the kindness and assurance she requires is potentially the king, the incarnate god, of her created world."
Blessings and a joyous heart brimming with love to you all...