This was something that I had to learn the hard way.
We may find ourselves wanting to be open and charitable when someone approaches us with this kind of behavior.
We see someone who may never have had anyone to show them grace.
We see someone who needs closness and compassion
We see ourselves as a person who can provide each of those things.
This is just something that exists within us. The kindness. The willingness and the ability to show up.
However, energy vampires exist. They will come into your life telling you everything listed in the graphic above. "I'm not good enough for you." "You deserve better." "I know I'm going to hurt you..."
Sure, there are some people who genuinely do have these fears, which can stem from a true lack of confidence in themselves, or from past trauma.
However, if you have been in the vicinity of a person for quite some time and have done what you could to reassure them of their desirability yet, they aren't working on working on themselves and continue to say the above phrases on a more regular basis instead of less often, they never give a reason for why they feel the way they do, and they seem like they are trying to convince you that they should not be in your life, allow this to catch your attention.
Observe their other patterns and behaviors. Get curious about them.
More than likely, they are hiding something that is going to hurt you extremely deeply when you do finally see what it is.
They are acting this way to gain leverage over you. That way, when you do find out and react in a way that is likely justified, they then can hold your reaction to their obvious wrongdoing over your head.
Be aware early on that people like this exist. They only want to control the narrative of the connection, making themselves look like the innocent victim and you like the villain.