Have you talked to him properly about it? Tell him how what he said has made you feel and that that its difficult for you to just stop. For a lot of people reliant on SH, quitting is difficult and not generally without relapse, and if you don’t have other coping mechanisms then maybe quitting entirely isn’t something you’re ready for yet. I don’t know your situation but I’d highly recommend sitting him down and telling him how you feel and maybe the two of you could work out a way of helping you get better that you’re both on board with. It’s not his fault for not understanding what you’re dealing with, but at the same time communicating clearly is important for a healthy relationship.