I know favourite person isn't an official psychological term, and I have no diagnosis of BPD, but believe i have FP.

Over the years, it has been a work acquaintance, my cousin, my science teacher, and most recently my driving instructor (and more), but most of the time my FP are always acquaintances, almost strangers, and yet I think of them none-stop, idolise them, and get withdrawal when not around them, it's horrible. I literally depwnd on them, but they never know it, they always disappear before I get a chance to make friends with them. After a while, a few months, I do get over it and my emotions return to normal but it's so painful...  

The way I see it, there are 2 options, either they have to just fuck me off outright, or just move on in their life, basically forcing me to get over them or else, or 2 I makw friends with them so I can return to functional level and get on with my life since I will be reassured that they do like me enough to be my friend and they won't leave... But the second option, so far, has never happened...