Hi and welcome to the board

It sounds like you've been on a bit of a roller-coaster ride. I'm sorry you had reason to seek out the information on BPD because of the things you're experiencing but glad you found us. We can relate to the feelings stirred up by the confusing and difficult behaviour of a disordered partner. People who haven't had this in their lives can struggle to understand how deeply it can affect us. I'm sorry for your pain. It's really hard
Maybe you'd like to share a little more about the types of behaviour you encountered. How long ago did he leave this time and how were things left between you? What are your hopes right now? We're here for you, so vent all you need. Writing about it helps. Also reading and joining other threads. We all support one another here. I'd also encourage you to check out the articles in the Tools menu at the top of the page. I found so much relief in knowing what I was experiencing was understood and made sense.
I'll look forward to hearing more of your story. You're not alone.
Love and light x