For about two or so months, I was in a "V" polyamorous relationship with a much older married man. His wife is much younger than me. He and I both had one-on-one conversations with her and we even had a group conversation about the dynamics right up front when he and I discovered we had feelings for each other. She said up front, on several occasions, she was okay with it. It gave her a chance to have her space as--her words--he was "incredibly needy". As the weeks went on and we continued to see each other, she started becoming very jealous, accusatory, saying mean and snide things to him about me or to him about himself. He would constantly check in with her when she'd make these awful comments and make sure she was still okay with things. It all came to a head about a week and a half ago. And he attempted to break it off with me. I accepted it, but he didn't want to let go. Resorting to social media to put me on public blast for moving on. I forgave him. Now, we've resumed some semblance of a relationship, but without his wife's knowledge. I know I am complicit in this, and thus, a guilty party, but I'm wondering if there's someway else better to handle this? We love and care about each other. And we want to be together. I've never once asked him to leave his wife or gave him ultimatums. It's been her doing. I find her very controlling, emotionally abusive, she gaslighted me and him. I want to be with him, but I also don't like the secrets and the affair-esque, don't ask don't tell dynamic.
Facts: You only dated this guy for about two months. This guy is the kind of person to try and break up with you, then use social media to publicly shame you for moving on. Dating him comes with all the baggage and drama of his wife. You don't like the dynamic the relationship currently has.
WALK AWAY. This is not a healthy relationship. I promise you can find someone who is just as funny or sexy or interesting or thrilling who is also more mature and doesn't make unreasonable demands and put you in unpleasant situations. The better way to handle this is to stop putting up with his nonsense.
There is nothing you can do to change his behavior or make his choices for him, you can just decide whether you want to be part of this disaster of a situation. If you decide to stay, you'll need to accept that staying will include dealing with his wife's tantrums, his propensity for social media drama, and the fact that this is now a cheating situation instead of consensual non-monogamy.