I would only join my parents in bed if I had a nightmare in my own bed, which wasn’t very often. They would let me sleep between them in the middle of the bed, which made me feel safe and cozy.

When I was maybe 7-8 years old, they started encouraging me to not do that anymore. If I had a nightmare, my mother would calm me down, talk it out with me, and then send me back to my bedroom. I never shared a bed with my parents again.

It’s strange to me that OP started sharing a bed at 8 years old and continued into their teens. At that point, it would make sense to start enforcing independence.

But if I recall, OP mentioned in another thread that their mother regularly insisted on expressing how much she loved them, then demanded to know if OP loved her too. So it sounds like OP’s mother has some extreme anxiety and self-worth issues, which she reinforced by over-mothering her “child” long past the stage where they should’ve been growing up and learning independence.