Hm - it's really hard to medicate addiction of any form, let alone sexual addiction. Addiction is often tied to trauma (obviously not always), so it's something that needs to be treated with therapy. I hope he's in therapy and if not, I would say that that should be something conditional on making the relationship work. A sex drive is not a problem, but an addiction is usually a lot deeper of a problem that an open relationship won't solve, and may just worsen. I'm glad your relationship seems generally strong, because to make an open relationship work, you need a super strong foundation of communication. Make sure that you set rules, expectations, and boundaries. Also, polyamoury and openness are 2 different things, and that might need to be discussed. Being poly is having a genuine loving relationship with multiple folks. Poly people have different ways of loving people and aren't prone to 'replacing' people (at least in healthy situations). Open re...