When my (2X NB) partner (25M) and I entered into a relationship and established boundaries (sexual and nonsexual) his ex (50-something M, who was an FWB) completely cut contact with my partner. Said he'd have to re-learn how to interact with my partner now that sex is off the table, and can't "turn his intimacy on and off like a faucet." Shitty takes aside, it's been almost two months now. There's been nothing but radio silence between my partner, his ex and his ex's husband. The stress of grief and mourning over the loss of a three year closeness has been utter hell on my boy.

His mood swings / episodes have been getting worse since the ghosting. He's left work early two or three times now, coming home in tears and locking himself in his room. He has at least once before tried re-establishing contact by sitting in his car near their house BEGGING over text for the ex to come out and talk to him. His episodes are slowly becoming shorter and shorter apart in time from eachother.

I'm posting here because I'm learning that typical grieving / "how to get over ex" guides might not apply to my boy, given he has both Bipolar Type II *and* Borderline Personality Disorder. Currently I have constantly reassured him that we (myself and our other partner) will always be here for him to listen, to support, and to care for him. That we accept him for who he is, and all that he is. That he should never have to hide his moods, no matter how extreme they are. He's done really well within the last month opening up more and more to us. He's in therapy as well; and I'm working on getting him on medication. Quite honestly I feel that, since my partner's main worry is meds flatlining libido, his ex was the one to subconsciously put pressure on him to go off his meds.

I just... Reddit, I need help on how to help my boy move on from his ex. I get that it's not going to happen overnight, but I feel things are getting worse. Help.