Not sure if he has BPD but a friend said its highly possible (shes a psychologist) 

He had sent me photos of rings in the past and then called his family my "Future family" and told me that I'm the one for him and then he flat out asked me to marry him and that if we can get married next year when I move.

Edit: He has called himself "Son in law" when we talk about my parents, he has also called me his fiance/wife.

So fast forward to today I asked if we can go to jewelry stores, since I'm seeing him in couple days, to look at rings and he asked me what I was looking at and asked me to send what I was looking at, so I sent it to him thinking he would discuss it with me and he got mad and said "You want to get engaged already?" I was taken aback and then he said that when he asked, he wasn't really asking he was just "discussing it"

tl;dr: BF proposed and then later on made it seem like it was my idea and that when he asked, he wasnt really asking just discussing it. I feel hurt and ashamed because a girl should be excited about this time but instead I feel dumb and desperate. Has anyone been in this situation before? how did you deal with it ?