Detachment

Hi guys I have a question. Has anyone ever had an experience with a partner who almost doesn't have a very deep emotional connection with literally anyone?? I've been with this person who is not a cruel person by any means and I don't think they are narcissistic/sociopathic any of that but they are a bit self absorbed but mostly just very blank. they struggle to give much emotionally and couldn't care less about my feelings half the time, I've been learning lately of attachment theory and they fit traits of a dismissive/avoidant. My thing is though are dismissive avoidant personalities also distanced from family. I talk more and say hi to their family than they seem to initiate and I find myself asking how the family is doing and most of the times it's "I haven't talk to my parents in a few days or even weeks sometimes. I come from a family where everyone talks at least once/twice or more weekly and with my some family members we talk every other day sometimes. I know this is not a place for diagnosis so please don't tell me about counseling and therapy. I'd only like to hear from people who have experienced this kind of personality before I make a whole big shit about it….is this normal?