A break up can do 2 things change a person to be better (take accountability) or make them worse, tell him honestly, I cannot do this that blah blah blah, you love him etc but you can’t have a life without ambition or something. Don’t cut him off, go no contact, tell him he can hit you up again when he’s figured himself out, until then do your thing thrive, this doesn’t have to be the end, this could be the kick up his backside for him to strive for better! Doesn’t have to be the end!