Hi,
What kind of relationship is this? To your son/your brother/your father?
If you start a thread with just a question and no background information whatsoever, you get no answers.
In almost no kind of relationship is an 8th house stellium healthy, as the synastry in relation to the inner chart shows. Also, with so much concentration of Cap energies, this could be a relationship filled with fear and hence turn out to be a type-A relationship, where one is trying to control the other. It is a serious, but heavy relationship, somewhat troubled.