He is 36 and im 13

advice?

My name is Jade. I am 13years old. I dont have many friends and i feel like im alone..alot. I suffer from depression anxiety.and.bipolar.disorder. I am a previous self harmer as well.
He is 36. His name is Tom. He makes me feel like im the only girl in the world,special and.like i.have a place in the world. We have been together since.i.was 11. So he was 34.

Is this normal.to.feel.this way about someone?