My partner of 20 years has been so patient. But two years of mental health struggles and constant chronic pain means I cannot be as physical with him as we once were. He wants to find a sex partner to be physical with, and I can't blame him in the slightest. But the thought of him having sex with other people makes me physically sick to my stomach and triggers an emotional spiral of feeling worthless and broken. How can l possibly resolve this dilemma? I cannot reasonably ask him to remain essentially celibate any longer. How do others navigate their partner's needs in a healthy way?