Takes two to tango. Please, only accept HALF the blame for the ‘relationship’ failure. At most. I know this is hard, but thinking that everything is your fault and your fault alone is at best ‘magical thinking’ and at worst can get very dark indeed. Also, lack of sleep is NOT the sole and only cause of emotional ups and downs. You are a good person, dealing with some issues re scheduling of time and energy. Which are solvable.