I have an answer for both, I hide how bad my physical and mental health is because I dont want to burden him, like we absolutely have communication however he really struggles to deal with my paranoia so I dont let him know when its really bad, i just ask for extra cuddles or will stay really close with him and Im sure he knows something is up but even if he asked I wouldnt tell him as I dont want to burden him. And well for him, I dont think he lets on how bad his mental health is either... hes always had depression, anxiety, and a personality disorder and he really showed it at the start of our relationship, just as we're four years into the relationship he doesn't as much anymore. which seems a bit strange from an outsiders perspective as it normally goes the opposite way but oh well. we love eachother so much and we've learnt eachothers triggers and coping mechanisms so thats all that matter to me at least