In my first story about this, I explained that in a lot of my dreams there's this girl who I know. If you want examples just ask. I've remembered that before I met this girl, I used to have dreams all the time of a girl with a similar appearance to her, which stopped around the time I met her.
Through my other source that's helping me with this, they suggest that it's shared dreaming. When lucid, I've tried to make her go away and ignored her, but she's still remained in the dream, almost like she's meant to be there, or she can't leave. But we can't know if it is shared dreaming for sure unless I find a way to ask her if she's had similar dreams (it's kind of weird to ask someone that though). I also have reason to believe that she has some kind of thought of me before sleep as she once said she wears a shirt from a media franchise which is named after a character which she says I look like.
However it has also been suggested by other people that these dreams are actually some kind of Astral Projection/Travelling, which as far as I know, I don't know how to do. Some people have also said the dreams can be past life memories, but I'm not sure, the dreams are way too modern to be memories of a past life. But I don't really understand the concept of past lives all that well, I haven't read much on it.
I would appreciate help with this if you can offer any, my original story/experience about this was ignored by almost everyone, which sucks. Every story and experience deserves attention if the person who wrote about it took the time to write about it.