yes, the relationship-portion comes with the User-Profiles, Followers, "Like" and Private-Messaging, etc. anyway. So this is already perfectly build into XF.Most forums people enjoy relationships but it is secondary to the conversation.
For the 2 lines of areas a person could associate with, there would be:
- Categories: the main-categories at the Forums-Homepage (e.g. Interests, Discussion Topics)
- Groups: as to which people associate with (e.g. Geographic Location, Local Group, what else ?)