Please can anyone advise me on how they dealt with their loved ones going through depression? A man very close to me seems to have all the symptoms of depression and I need to know how to best support him through it. I may be wrong, perhaps it isn't this, but the symptoms are all there. I have been there myself before, which is why I think it may be this.
I know I need to give him some headspace first of all, but I want to be able to assure him I am there for him fully without making him think I am crowding him.
Should I blank all contact for a few days, and then perhaps just send a text saying something like, 'I am thinking of you, please let me know if there is anything I can do for you'. That seems so vague yet I don't want him to feel worried either that someone's worried about him, if you see what I mean? 
The dilemma is that we were actually seeing eachother for a few months and he has ended it because he was not in a position to commit himself emotionally to a regular relationship, and I have accepted this, luckily he has caught me just before I fell madly in love with him, so I have dealt with the break-up ok.
And I am not asking how to support him as a way of wheedling myself back into his affections either, he still wants me in his life as a friend, which we were before we initiated a relationship. I have accepted that too.
His situation comes from a very deep-seated pain and anguish from a few years ago, which re-surfaces irregularly causing him to shut people out, he said.
But I have watched him lose about a stone in weight, become more withdrawn and confused, over these last few months, despite our relationship being otherwise loving and caring. I knew something wasn't right within him if I'm honest, but he was a happy occurrence in mine and my young children's lives, I didn't want to let him go too soon I suppose. I see that was selfish now, and instead I want to be able to support him, and I have no endgame, I know there is no chance for reconciliation between us unfortunately, but that does not mean surely I should make a 'clean break' altogether?
In the cold light of day, I think I can manage our relationship going back to just platonic friendship. I genuinely want to be there for him, and I strongly feel this over-rides any personal needs I may have.
Please advise me how I should deal with this first week at least. This all onlyhappened last night. I keep wanting to text him but don't know what to write. Should I just ignore him for several days, 'let him be', do you think?