I remain confused- my FP and BF, who is bulimic and has NPD (I think anyways) had a great conversation- and are re-building our friendship, and he even ended saying, "this was a great conversation!". Then bam- he deleted me from snapchat???? Who does this?

It's like he is preying on my BPD- and knows its gonna sting me.

What now? I thought I had won this mind game and could move on. Should I be cautious?