Basic Trope: A girl worried that her boyfriend finds out her secret, but he still loves her.
Straight: Alex discovers that Katie is a werewolf. However, he still loves her.
Alex discovers that Katie is a murderous savage werewolf. However, he still loves her.
Katie is Shrinking Violet, and YandereStalker with a Crush to Alex. Alex only learn about her love when he discover that Katie has murdered a bully who picked on him. He think Katie's extreme devotion to love is cute, and so he help her dispose the body, then ask her out for date.