My partner has BPD. I knew this in the beginning of our relationship, and i though it would be fine because they handled it well. However, i am now learning that they have no idea who they are as a person and everything they portray themselves to be is a lie. I feel like i don’t know my partner as well as I thought i did. Being with them is so good when they’re well, but in the times when they aren’t it hurts so bad. What do i do?