A lot of these are bang on the money, and the sort of thing that you should definitely be looking out for.
But, if you want to simplify it a great deal, you can boil it down to the following.
They’re a good person, who seems to LIKE you, and they behave the way you would, in any given scenario. Simple example: the waitress brings something to your table. You say ‘thank you’. He does, too. Replace that with any simple thing that gives you an insight into the man, for you, personally.
What you’re looking for is a considerate man. Someone you can envisage being friends with and wanting to be around, once the lust and passion settle down.
I’m not talking about some dull-arse, ‘nice guy’. Being considerate doesn’t mean a man is dull or boring. Look for the man who cracks you up, who looks at you a certain way, who’s as into you as you are him, and with whom it’s just … easy.
If he gives any indication that he’s not this sort of man, heed the red flag. Don’t push on through.
There are zillions of fish in the sea. Literally, zillions. Don’t settle.
Remember: in a relationship, love and lust and passion are all great. But you’re also meant to like each other and be nice to each other. Once those go, it’s over. It’s over - whether you heeded the red flags or not.