Its best to leave if you can.
I know the feelings you mean and im going through it now , but i always think back to life with him here , and i know where im better off.
It will only continue and you will lose yourself more – disconnecting helps you reconnet with yourself.
I could not of dreamed i could advise anyone say 8 weeks ago i was in an awful place, still have my bad days – but i know the distance is healtheir.
I hope you find the strength , you deserve so much more and until someone wants to be helped theres not much we can do
All the best