Lots of green flags, the beauty of all of them is that he never made any kind of big deal about himself and didn’t seem to realise how great he was. Not in an unconfident sense, more that he didn’t ever ‘virtue signal’. I noticed tonnes of green flags after only a few dates. Off the top of my head:
Always insisted on collecting me and dropping me back after dates, with no hints or pressure. That’s the ideal standard of course, but I’d never actually experienced it before.
After me pushing him to come in for a drink after dropping me off, after a few dates, we had sex finally and he was so unselfish!
He used to always buy me plants, instead of flowers, which I loved.
When we had been on only a couple of dates, I had to cancel as I was properly sick, some kind of virus. He brought me soup and medicine and sat with me a bit even though I was mortified. He kept putting a cold compress on my head and read a book to me. I woke up to a note (he had never stayed before and didn’t want to be inappropriate). He came back the next morning on he way to work to drop off fresh juice.
He looked after his nephew and invested a lot of time and money into him. His brother was/is a feckless git but he never made anything of it, and never even mentioned his brother, just got in with it. His nephew is now a real high flyer after my now DH put him through school and university.
He can cook AND do DIY!
Very generous. With time, money, energy, anything. He gives first, without question most of the time. He’s not a fool though, just not right at all.
A big green flag was that he has loads of make and female friends going right back to childhood, who he has lovely relationships with but they’re not in each other’s pockets. They’re all kind and very much functioning professional people, there’s no weird ones or mates that encourage him to go on benders.
There’s loads more, I’m sure.