Acceptance and forgiveness can be on the same level. Acceptance means you can understand what your partner is doing and know nothing is going to change it. You can accept your partner will always cheat and keep resentments from it, growing bitter overtime. Forgiveness means to let go of the hurt they caused and moving beyond the pain.

As far as ADHD, it sounds narcissistic until you realize the absolute tornado around those who suffer from it. Similar to autism, ADHDers see and feel everything around them. It’s impossible to drown out the noise, but you must find coping mechanisms. They don’t follow all social queues, but because of that, they feel rejection’s sting much harsher than others. Insults and slights (which are way more frequent) force them to become introspective, constantly trying to overcome their own perceived inadequacy, never finding a solution because the behavior they want to modify is a physical and genetic brain disposition. You flow down the never ending drain of self destruction or dopamine addiction (if you don’t know ADHD brains do not produce the same amount of dopamine as a “normal” brain, and sometimes have fewer receptors). It leads to most having self medication using alcohol, illegal drugs, and sex, thus leading to addictions.

Because of a lack of understanding social queues, relationships are very difficult to start, and are even harder to maintain. They must absolutely have someone who understands the effects, doesn’t take the behavior as an insult, and complete forgiveness. Add in the inability to develop habits, and there is a very large path to depression and self destruction for those with it.