I grew up very close to my two cousins then when I was about nine, there was a feud between our parents and I didn’t see them or hear from them until recently. My parents were furious at me when they found out I was back in touch with them after 30 years.
My own children are teens and their cousins are toddlers who live across the country. They have met a few times but are not close due to the distance and age difference.