Family and Friends?
I certainly think it is possible, by mutual consent of all involved, for friends and family to hang out together. I also think it is possible that we can, if we choose, hang out with someone different for a change.
It could be that certain "karmic debts" hold a person to a certain group, and when that karma as been "worked through" or outgrown (I don't believe karma impels us i any way) then perhaps it is best that we move on to a different group, or possibly even to spend some time solo.
If we "advance" more quickly or more slowly than others in our group, might the group not naturally fall apart as members realign themselves with new groups?
(Or does the idea of "advancement" even make any sense in the cosmic perspective? Maybe we are all perfect already and we reincarnate just for fun. Nobody has proven that to be untrue, and I personally think the "just for fun" explanation makes as much sense as any other.)
Anyway, I have one good friend who agrees with me that we have shared a few past lives, and one of my three kids was with me in a previous life, although I'm pretty sure none of my grandchildren ever were. (Although my newest newborn granddaughter just might be one of my late aunts. Time will tell.)
Above all, when asking questions like this remember that almost everyone has an opinion, and a significant number of people like to state their favorite opinions as if they were fact. So always keep an open mind about what is possible, and always be skeptical of pat answers.
And, if you should be lucky enough to remember this life in your next life, well, then time will tell, won't it?