Thank you for your question.
I want to suggest something new. At this time, you can't refuse to serve as the superior of another military member in the chain of command. However, I think that, with the benefit of hindsight, you should be able to refuse to serve as the superior of another member.
This would make a difference for many people. We know that we shouldn't be the superior of a military member with whom we have or had an intimate relationship. We know that this undermines the judgment of the person in authority and prevents them from being a good leader for the other member.