This is bound to be ridiculously long for relatively quite a small query.
Just back from a weekend visiting the ILs. BIL (DH's brother) is 30, still living at home, and depressed. He takes antidepressants, has done for years, but still suffers quite severely from time to time. I really, really feel for BIL who is absolutely lovely, the nicest guy in the world. I had/have depression too so I know roughly how BIL is feeling right now. BIL and I have a close relationship, but we don't text or message as we've never had the need to before. I want to reach out to him now.
However, one of reasons BIL feels as he does (I know this because he's very open about it) is that he's upset/a bit jealous that DH and his other siblings are all either happily married with kids or leading exciting lives (other BIL is travelling). I know he's happy for DH but he's also sad that he hasn't got the sort of life he perceives DH has. I'm sure we all know that marriage isn't always rosy that, but BIL can't seem to see it like that.
So knowing that BIL is feeling a bit wobbly partly because DH and his other siblings are enjoying all the things he doesn't have, and he's probably spent the whole weekend feeling that he's had his nose rubbed in that, would I be unreasonable to message him? I just want to say something like 'hope you're ok, I'm here if you want to chat' but I don't want to draw attention to it or make him focus on it. Shall I message him or just leave him alone?