((hugs))
It will be very, very, hard for another addict/alcoholic to handle being with someone who takes strong meds (is that what he was upset about?). Doesn't matter if you need them for the disorder. They'll get ticked, triggered, and they will pout that it's unfair.
Probably best if he's gone. Although it might not feel like it.
Are you going to be able to switch to non addictive meds, or are you stuck?