I would like to join
WW in welcoming you.

I think that most of us would agree that it is hard to deal with a pwBPD until we learn healthier ways of managing our own lives. That can greatly reduce the stress associated with the relationship.
There will always be some element of strife, but no relationship is perfect.
Do the two of you have any children? Do you live together?
Perhaps some other members will join in to let you know how they are handling things.