Mystery of The Ardbark Demon

“I don’t want to show it to you.” “I don’t trust you.” You say.
“Come on, it’s only you and me who are talking.” “Pls, you can trust me.”
“I can’t.”
You set down your phone and look out the window. You look at your reflection and see someone with their hand on your shoulder. You freak out. What do you do?