What do i do

We dated for almost 9 months everything was amazing and so much more we communicated very well and had a great relationship today he told me that he cant handle it mentally. We have been talking about his mental health for awhile. He is struggling and when he broke up with me today he also started to cry and said how can he love me if he cant love himself im heartbroken his mom has reached out and it was heartbreaking. I dont know what to do I feel as though once he works on himself we will get back together. I also am taking this time to work on myself more and i told him im not moving on or anything. What do i do though help