For those of who who have friendships or are romantically involved with someone with BPD. How do you deal with the ups and downs. My person, he was recently diagnosed, however for the longest time he kept it hidden from me, from his family. The signs and symptoms were there but he refused to get help until recently. 
I asked him to stop hiding his symptoms and being avoidant when he is feeling very down or splits. He has gotten better with sharing when he is like that. 
I do make sure to tell him that I am there for him. But sometimes I just don’t know what to do to help him besides be patient and let him go though it. 

So my question is…What are some ways you have coped with your loved ones with BPD? or if you have BPD do you have any advise on how to be a better support system? 

Thanks in advanced!