Below Is an Argument from Analogy in Standard Form

Below is an Argument from Analogy in standard form. In 2 to 4 short paragraphs, do the following:
-First [1 point], suggest what you think is the best candidate for a genuine and morally relevant disanalogy between the cases being compared. "Premise 2 is false
because…"
-Third [1 point], test your suggested disanalogy for moral relevance. Be sure to describe your relevance test and explain what it shows.
The argument:
[note: physician-assisted suicide is when a doctor writes a prescription for a patient of an overdose of pain medications they can use to take their life if they have a terminal illness, have been verified to be psychologically competent, and have only a certain amount of time to live. Typically, they have a condition that is unbearably painful or will result in loss of their basic abilities to function.]
1) Doctors should consider sex with patients absolutely off limits.
2) Physician-assisted suicide is relevantly similar to sex with patients. So, doctors should consider assisted suicide absolutely off limits.