beta
Get down on your knees, apologize genuinely, then leave Dan to let him heal for good because you ARE the cause of his illness (you can help him indirectly there's no need to make him feel worse by keep seeing you and re-living the pain you caused), and go develop yourself into a better person, make amends to people you crossed when all they wanted was to help you. Until you figured it out, if you come back and see Dan again, and he's in a better place and doesn't mind you, then maybe you can try to fix the chaotically tangled threads of fate you both have. But IF Dan still find your presence as a threat or make him feel uncomfortable, then this is a tangle you no longer able to untangle and the best you can do is to not make it worse, and leave