I have caught my GF with BPD cheating on me with a guy she met online and had been hooking up with him, whenever possible.. I really don't know how to move forward because this has ruined my self-esteem and confidence for the past week.
She said she was sorry when I caught her, and she told me it will never happen again, she regrets it and is going to delete all possible contacts with the man she cheated with.
I have such a turbulent emotional state for an entire week, so I don't know how to deal with it, but.. forget about it.. I acted as if nothing happened, and treated like usual.. but now I'm confronting the trauma, the heart break, the emotional weight of it all.
As of today, she's acting as if nothing ever happened between us and all that guilt she expressed was gone, I never dared to bring up the subject but when I asked her earlier what she felt about me, she splitted and tore me down..
I don't really know what to do anymore.
EDIT: Thank you for the advice given to me, I'll try to formulate something to escape from this..