My SO suffers from BPD. She is a great person and we have been together for 3 years now. Recently she has been acting different. She jumps between hobbies a lot, and just is very impulsive regularly but lately it has been bad. She decided to take a trip to Europe last month and is leaving soon, which is great. She has has also been dying her hair, getting nails done at a ridiculous rate and she never really used to change her appearance. She seems to be in a identity/existential crisis. I have talked to her about it and it gets brushed off and she says everything is fine literally the day after saying the opposite. It is exhausting not being certain of where I stand.

Any advice on how to handle her without hurting her? My friends have been saying I should leave her, but I am not going to do that just yet. This may be a natural relationship ending, but we have been down this road before. Any advice or opinions would be appreciated.