Yes, but the other person should also still be taking care of themselves as best they can too. Like as someone with ptsd, I should be able to set boundaries and advocate for my needs (like if I need to be alone to regulate my emotions during an argument,etc.) But I also think a partner should help support me in some ways. Not take on the responsibility of my emotions or triggers, but just do his best to comfort me in them and not amplify my pain.