Dear Bella, being ghosted is awful. Simply awful. My thoughts are with you as you go through this terrible time.
Do you want to tell us more about the events that led up to this?
Indeed you are on the right track. All you need to do is get through it, one day at a time. Focus on yourself. Eat healthily, work out, do mindfulness work. Call friends and family and do something special for yourself. With time you will heal. Before you know it the weekend will be past and you will have survived your first weekend.
I don't know how much you have read about BPD. Is he diagnosed? If you know how the disease impacts, you will know this is not about you. He is overwhelmed and running away from his feelings right now. You are the victim of that internal war. In time you will realize you dodged a bullet. Do you really want somebody in your life who would treat you like this?
Arm yourself with knowledge, it helps to strengthen you. Here is something to get you started:
https://bpdfamily.com/pdfs/10_beliefs.pdf 