HI SO WE'RE THROWING A HUGE PLOT TWIST INTO THIS.

(Crush) wanted to take you into the Room of Requirement. Curious, you followed. In there, they took a hesitant breath, "I have something I need to show you..." they said in a quiet tone...

What do you do?

IF YOUR CRUSH IS HARRY

Then I'm sorry to inform you that you will be the one telling him about your mark. It just doesn't make sense for Harry to be a death eater since him and Voldemort are destined to battle to death so... yeah :)