need help!!

so my boyfriend is asian and it's been scientifically proven that asians have small penises and the type of asian that he is has proven to be the smallest. he keeps saying he's scared because he's worried he won't be able to please me. i've told him time and time again that i don't care because i love him and nothing is going to make me love him less. how do i make him comfortable and make him know that i love him no matter what and size doesn't matter to me?