I’m a 21F , who lives with a 63M who has BPD in a room mate situation. He is romantically interested in me, &amp; I have made it clear that I’m not interested in him in any way, that I am celibate, &amp; am unable to date until I get myself on better footing.  (At the time, I was struggling a bit, &amp; had no real safe space to go.)  I initially considered my room mate to be kind,  but that slowly changed.

I have caught him sniffing my panties, (I threw them out &amp; carry all my underwear with me every time I leave), &amp; totally being intrusive with my things(going through my belongings in an effort to get to know me as he says). Also waiting until I leave to start conversations with me about things that I have no interest in. 

Lately ever since I have started sleeping in a room as far away from his as possible, I have noticed that he gets up in the middle of the night twice as much as before, and I have caught him watching me sleep. (I wake up every single time I sense or feel like someone is watching me while I’m sleep due to being homeless before). 

Lately more than before, he has become extra aggressive when I am walking down the street, &amp; he notices guys looking at me and giving me attention. I am not going to tell him that I am leaving at all. When I walk, I always power walk &amp; walk as far away from him as possible. I also consistently turn down any opportunities or offers to go out with him or anything that suggests that I am interested in him. 

I use the gray rock method when he speaks to me.  Although he has asked several times, I haven’t given him a way to contact me or communicate with me outside of when I am actually there at the living space in the morning.

I just truly feel creepy obsessive vibes with this guy. I am in the process of saving up my money to get my own place in a different town that is far far away from him. I want to make it so he is unable to contact me or see me in any way, shape, or form when I leave. (We have never and will never be intimate, &amp; I have given him no indication that so am interested in being anything to him or with him.)  
One main reason I haven’t just left is because I am saving money to get my own place. 

I purposely have kept to myself( as much as I can that is related to me information wise,ect) , in an attempt to safe-guard myself from the trauma that may occur when I leave. 
I have witnessed what happens when you attempt to leave someone who has BPD. (If this post is not allowed, please delete. I  am also very sorry that is post is so long.) 

My question is how do I safely leave when I am able, &amp; maintain my privacy/deal with the intrusive behavior while I am here stacking up my money to leave?