They endure because you trust one another and share a lot together at a spiritual, emotional and shared experiences level You aren’t plagued by the intimacy of romantic love and sexual relations, with all the accompanying doubts, jealousies, complications, etc. Neither of you need to perform in front of one another; you are who you are You can learn about another gender from one another in a safe and uncompromising way, if you two are of different genders Both of you benefit from each other’s perspectives on challenges facing you in relations with other people There is always someone you can go to for genuine, fearless, and forthright advice - platonic friendships tend to have a quality that transcends the often unspoken competitive and conforming needs of same gender friendships
Acknowledge that sometimes the partner’s concerns about your platonic relationship can be the hardest part of maintaining a platonic friendship. Your spouse needs to know that (a) you aren’t talking or complaining about them, (b) you will be open with your spouse about what you say and do with your platonic friend, (c) there will be no secretive actions, and (d) you will not let the platonic friend supplant the relationship you have with your spouse.
Try not to flirt with your platonic friend. Avoid complimenting them in any kind of romantic way. Avoiding physical types of touching reserved for romantic relationships. [5] X Research source