A few points in the book so far that jumped out at me:

Quote:
HSPs can be unusually afraid of both intimacy and conflict.


Quote:
HSPs growing up in stressful, unhappy families are more likely than non-HSPs to have the characteristics that other research has found to be most dangerous for relationships: pessimism, low self-esteem, depression, anxiety, and an insecure attachment style.


cac4 and I both are HSPs/non-HSSs:

Quote:
They are usually reflective and tend to be happy with a quiet life; not impulsive, not seeing much reason to take risks.


Also:
Quote:
Dismissive avoidants will say that they have no memories of their childhood, or say things like, "Oh, Mom tried to kill herself a few times, but it didn't bother me much." Or "Childhood? Fine." And nothing more. Feelings are minimized.

Preoccupieds will tell you the equivalent of a book about their childhood when you only asked a one-sentence question. { }


And finally:
Quote:
Insecures tend to be attracted to each other, even though they can also make each other miserable (imagine the increased insecurity an avoidant dimissive would create in a preoccupied or fearful avoidant).