There's no secret when it comes to what this position means. Despite what you may have seen on TV and in the movies, sleeping back to back without touching does not mean your relationship is in any trouble. In fact, it can mean precisely the opposite. If we're really being honest, this looks like the most comfortable position of them all. It's nice and spacious - we don't blame anyone for choosing it above all the rest!
One of the signs that marks a long and happy relationship is the ability to separate from time to time and focus on yourself as an individual. You don't have to be together 24/7. Couples who become too dependent on one another end up turning their relationship toxic. It never ends well or lasts very long at all.