There are 3 levels of compatibility in intimate relationships that connect the most subtle realm of spirit to the most outer, dense form of body. There must be alignment in heart, through life view and spiritual intention; mind, through clear, open communication; and body, through physical chemistry. Compatibility on all 3 levels of heart, mind, and body is the ultimate love relationship, which everyone is seeking!
Communication within the couple includes the open, clear, and honest sharing of feelings, desires, thoughts, interests, and creative ideas. It is in this sharing of the deepest parts of ourselves with another that true intimacy in the relationship is cultivated.
Without good communication both verbally and non-verbally, then the love relationship is not sustainable and cannot grow.