Hello,
 I'm wondering if we will ever get to see a feature where we can use Buddypress Groups to attach a wpForo forum to that group so the users can have their own private board inside of the Buddypress group.
I've searched for this on the board and have seen several members request this feature, but it seems there is a misunderstanding of the word "group". The buddypress groups isn't a user role or permission, it's a feature of buddypress where a user can create a group for discussions via activity feed OR can attach a BBpress forum to that group and it's in control of the group owner (hidden, private, public).
I want to use wpForo but it's the one thing that's stopping me from using since my sites rely on this feature with Buddypress groups.
Hi,
I suggest you check out the wpForo Private Messages addon. It allows multi-member conversations, so users can create a group and have a private conversation.
For more information, visit: https://gvectors.com/product/wpforo-private-messages/