Does this sound like borderline personality disorder? ?

Yes, it sure does sound like BPD. Although, it is never diagnosed until youre 18. Annoying, i know. I suffer fro, BPD but im only 16 myself, i got diagnosed with it not long ago. Although as im 16, i wasnt diagnosed with BPD i was diagnosed with a younger version of it, for it to be changed to BPD when i hit 18. If it effects your life so much that you can't keep on going that way, and it effects everything you do then go to see a doctor and share your concerns. You can get help with it, without waiting till your 18 and getting worse over the 2 years. You will be offered help to deal with it. But if it effects your life slightly, and you don't think its ruining it, then try someone online sites to how to cope. Either way, good luck. <3