Starting a new relationship can be extremely difficult at the best of times, let alone when mental illness is present. But it seems like he really is trying. Any guy who is worthy will be supportive even knowing the dirty details.

As hard as it can be try to remember that this is a major learning curve for him too. It will take him time to work out your triggers and what to say/do when you are struggling. But it seems that he really is a good guy so should get there.

Good luck with it all!