my parter has ptsd and i have bpd which presents ptsd-like a lot of the time and developed from trauma. we have had a few pretty tumultuous years and it is def not always easy but now we intentionally work really really hard together. i have been with other people with ptsd before and it was really toxic and re-traumatising. i have so much empathy for your situation , even tho i know mine is different. but truly i get it just can be so hard, especially when one parter triggers the other with their triggers(probably the main difficulty in my relationship), or doesnt understand the other persons trauma.
i feel like for both to feel good within the relationship there needs to be transparency and both dedicated to their own recovery and the recovery of the other person. my partner and i spend a lot of time talking about our triggers/symptoms, boundaries and needs, and the ways that boundaries and needs are in constant flux. we are constantly growing so it feels really important to hav flexible but strong boundaries where everybody feels like they are being seen and heard. we have done A LOT of codependence work (apart and together) and both are dedicated to going to therapy and making sure we take our meds etc. one of the most important things i feel like is acknowledging that accountability goes both ways. as u mentioned, in a double ptsd relationship its really easy to lash out on one another. it has helped my relationship so much to start learning how to engage in accountability processes where we do things like using "i statements" (basically non-violent communication) and have room to voice our feelings without judgement and reactivity from either of us. its really fckn hard and in no way am i saying we have all this down pat and have a smooth easy relationship where we always calmly negotiate things, def not the case. but we had to get to a point where we had to make the conscious decision together to work like this. when u truly love someone and are on a significant journey with them it pushes u to see yourself clearer and want to find wellness together.
im curious about that ptsd relationship book i might check it out. tbh really understanding what codependency means has really shifted things for me and my partner in our own ways, it leaves more room to consider the others perspectives.
i really hope that ur husband begins to open up about the diversity of ptsd symptoms. i wholeheartedly agree with those on this thread who are saying it is really important for him to understand ur ptsd and support/affirm ur experience instead of deny it. denying ur trauma is quite violent and i really hope you have some good support thru this. you deserve that support and recognition, especially from a partner