Mettaton x child reader

Monsters are on the surface. After you save Mettaton he desides to adopt you and your friend (f/n). you were abused in the past and unsure if you can trust the robot. Your scared that monsters will see your 3 real soul trates white=kindness, love, and empathy
black=hate, L.O.V.E, and cruelty
purple=curiosty
you try to be good thats all you want is to be a good person. Sadly its harder than it seems. (cover art and Undertale does not belong to me)