Favourite partnerships

Favourite relationships (romantic or platonic) where feelings aren't the end-all-be-all and there's focus on partners being considerate of each other's mental, physical and emotional, material (etc.) interest and well-being. This should include one or more of the following aspects 

• a  mutually tacit understanding of each other and their relationship
• jealousy is kept to reasonable amounts
• communication actually happens, misunderstandings are minimal
• being mutually supportive (but not submissive) of each other but also valuing each other's opinion
• partners that are complementary where they each bring something to the relationship
• accepting each other as they are and not trying to 'change' them without their consent
• being themselves with each other in all aspects, sharing the highs, lows and in-betweens