It was the first time I felt like I had a team outside my family (which itself can cause a downward spiral because you feel guilty always leaning on your family).
This could lead to a lot of bias and stereotyping from his end, and it can easily make a good date become a bit awkward.
It is also good to know that supporting him will help but not cure him, so when he has symptoms, do not blame him or yourself for the depression being there. Supporting those with any mental illness can be taxing at times, so setting boundaries and looking out for yourself is just as important so you don't burn yourself out when caring for him. I think the advice that's already been given here is really good; the only thing I can think of is that it might help to keep in touch when you feel like or when he feels like he's 'falling into depression' or having an episode (whatever wording you both feel comfortable with).
The reason behind that is because everyone experiences depression sooo differently.
Shutterstock People suffer from depression for all sorts of reasons.
From a horrible break up to just a rough patch in life, depression can hit at any time, and for some it’s a never-ending condition they have to cope with every day.