A male friend and I have spent quite a bit of time together because he became single at around the same time I was widowed. Definitely very platonic on both sides, we were just handy companions for an evening out.
The GF he split was with a sweet woman with a lot of MH issues. They split, in the end, because he said she couldn't handle her friendship with another woman and he couldn't take the jealousy.
Now, I've seen him with that woman and I'm not surprised ex GF had an issue with it. She is a stunningly beautiful woman, much younger than him and whilst I believe it is just friendship on the part of the woman, male forend would definitely like more (although he denies it) Any woman would have to be a Saint or stupid not to have an issue with it, so I always felt it was unfair to blame ex and her MH for not being able to handle it. I've told him this too.
Anyway, 6m on he's started meeting ex "as friends". He's adamant they will just be friends and she understand this, but they're doing things like an evening in with Netflix and she's contacting couple friends to set up what are essentually double dates, which he's happy to attend. Whatever he's saying to her, she's getting a different message.
I've told him he's playing with fire and messing with someone who he knows has fragile MH. TBH it's made me step right back from him. I'm worried for ex, but I've only met her a handful of times. Is there anything else I should be doing.
When I say fragile MH, I mean self harming and being brought home by police in the early hours. 