Hi TrulyMadlyDeeply,

1. Why did he thaw? Did I do something right here?
I would feel confused as well especially if the windows to the good moments are short and the bad moments are longer this can cause confusion when a pwBPD does a 360 especially when they had an intense rage or dysregulation or devaluation. I completely understand I recall my ex would give me gifts out of the blue when there were periods were we had fights for days and I felt angry when I received these gifts - I did appreciate it but the timing was completely off.
I think that is the part of what they mean about a pwBPD having intense interpersonal r/s's. They don't know how to repair the r/s and they'll segway from one thing into the next without really know how to deal with it in a r/s.
When a pwBPD splits you white usually it's because you are doing something for them. Although it seems like it's the complete opposite a pwBPD are scared to navigate by themselves in this world and have dependency issues on their partner and can act helpless and needy and that can trigger guilty feelings in people that have a care taker quality and we become helpers to a pwBPD.
2. What can I realistically expect even if he does receive help? I don't want to be idolized. I never cared for that intensity.
We can't predict what is going to happen in the future and we can't tell you what to do it depends on what you want in a r/s. For example lets say H does not want to get help for himself and you're the one currently getting help - by doing the self work you may realize because of how you grow as a person and become more aware - you may want something different or something more in a r/s.