zondolit, welcome. I sense a good level of self awareness and willingness to learn. You'll get a lot of out this site.
I felt he was not always treating the counselor well. On further reflection, I recognized that he also doesn't always treat me well.
So cool how you were able to really see your husband's mistreatment of you when you watched his mistreatment of someone else.
1. Deceit. The advice seems to be to not tell my husband I think he has BPD. I struggle with what feels like low levels of deceit as learning about BPD has been so important to my life over the past several months, and yet I say not a word about it to my husband and keep my books and notes from him.
I really struggled with feeling deceitful too, until I reframed it in my own head as good boundaries. If I hear gossip, or someone shares a secret in confidence, I'm not going to run and tell people, even my husband. Doing so would be poor boundaries. It's healthy to have boundaries in marriage. We say no. We set limits. One might even argue that a policy of telling him everything could be a sign of codependence.
Like Cat said, the reality is that he can't receive it right now. There's a time and a place for everything. There will be a time to mention it, likely when things have healed, there is some trust rebuilt, and a measure of emotional stretchiness is back in your relationship.
While you're waiting, keep in mind that the diagnosis is secondary to the behaviors. Diagnosis doesn't do squat if the behavior doesn't change. Good news about behaviors is that you can change yours, which will change his. We talk a lot about that here. Have you read any of the tools Cat mentioned?
2. Grief. I feel like I have to let go of my hopes for a marriage that is deep and intimate. We've never achieved this in our marriage, but I'd always held out hope that maybe somehow the situation would change. I am trying to figure out what I can hope for--and what I am capable of, like letting go of judgement, which is hard--and how to grieve the loss of a dream.
Goodness yes I've felt this. What I can tell you from experience is that the bigness, the intensity of the feeling, will subside. You won't always
feel this bad. It's hard while you're going through it. I survived and you will too, and so will the folks who come after us.
On the other side of the grief you feel is a different kind of relationship, but it's a good one.
You've got this.
pj