People can be born with certain traits that ultimately devalue them. We are not perfect. I usually find that reading one’s natal chart can provide some clear cut insight into their nature and how to work around it. Either that or I delve deep into their character and psychoanalyse them.
Toxic traits can come in many shapes and form, but when one starts to treat the relationship like a codependency, where they are literally entering your bubble and don’t have one of their own, that’s when you should leave or else they’ll suffocate you in your own bubble.
Relationships are suppose to be two healthy bubbles joining together which we call interdependence where there is a seperate identity at core.
People who carry toxic traits could be a mixture of shitty upbringing, self-defeatist attitude, low self esteem and other traits. This doesn’t make them bad people at core, but it’ll give them shitty traits that people will sense and avoid and if they get too comfortable they won’t leave. If the person has had a history of frequent relationship conflicts, it’s enough for a red flag.