As if absolutely desperate, restlessly so, for your attention, there are people who will jump through hoops, pull insane gymnastics, and attempt to defy the rules of physics to get what they want from you. They could have asked politely, discussed a fair deal, come to an arrangement, and commit to it or back out (and try again elsewhere). But it’s as if they’ve somehow learned that, by constantly scamming and/or actively spamming others, they get their way - and that’s all that matters to them.
These are the type of people who will emulate the most outstanding and desirable traits and qualities that can be found in a person. So much that, because they are eventually found out, these turn into "red flags" to watch out for. The “too good to be true” kind. So not only do they mess with those that they target, they also ruin it for the few that are genuine and come with substance.
Consideration for your wants, your needs, or even your limits is nearly or even completely nonexistent unless it is stitching, patching, and holding up the illusion while they would still bother with it. And that’s usually what ultimately gives them away.
But how to filter them out sooner rather than later? How to figure them out early enough? They change and evolve so, if we’re trying to be precise and accurate rather than overly dismissive (or permissive), we gotta be on the lookout for how they move - whether directly, by observing and probing them, or indirectly, by studying known patterns that are likely to come up.
If you have trouble wrapping your head around what they do, though, chances are that they're so unrelatable to you that you cannot easily make sense of them. And, albeit a pitfall, that's good news.