im not sure if this is the right place to put this so... um.. ok everyone has heard of reincarnation right, where u die, but ur spirit goes on to another life form, but remembers nothing of its past life.. what about if that happened, but you'd existed since time began, from another planet, and every new life u entered into, you still remembered the old ones. you went on watchin people you care about die over and over, while you kept moving on.. what if this species where here to commit genocide... but one of these people happened to be a close friend of yours, but wanted to find away to help us live forever, instead of destroy everything.... i dont know if this is making any sense. i dont think it makes complete sense to myself to be honest but any help would seriously be loved...
seems like you should take up writing. perhaps there are entities who keep continuous awareness of their travels.........any other speculation would delve far into the world of fantasy, however. not a bad thing. your mind may be wired for novelty. keep thinking differently, man.
From what I've read you can remember past lives, I think through meditating for a long time maybe a few years and stuff.