>>45676644A Tulpa is a self-created consciousness that develops alongside yours like any regular human being. You're basically convincing yourself that you have two minds in one brain.
There are a lot of different beliefs about what a Tulpa is and what it can actually do to you and your mental health but know this: They can never start of ill-willed or with the intent of hurting you unlike what those /mlp/ horror stories lead you to believe. As long as you treat them well and care for them, they can offer helpful insight into everyday situations and even offer helpful advice.
I just wanna clear up any misconceptions that Tulpas are a product of schizophrenia or any similar disorder. They are made by (You), therefore they aren't harmful if taken care of properly.
TL;DR: An advanced imaginary friend
that you can possibly fall in love with if things happen lead to that kind of relationship happening. 