imaginary friend suddenly becomes real

this is lowkey half baked and missing so much context...

so a girl at her lowest, left with no choice, comes up with an imagnary friend as a last resort to battle her loneliness, she uses him to keep herself company and stay sane and all, fast forward a few years. shes regained traction of her life and moved on from him (her imaginary friend), but one random day, she wakes up and goes to make breakfast. but she sees her imaginary friend in the kitchen making food for her.. shes obviously confused and perplexed, but to him, they were always together, to him hes been living with her his whole life, all his memories are about her. infact he doesnt remember anything else. just her.