My panic over an unofficial idol photo in our fan group

I was just checking our K-pop chat when someone posted a sneaky picture from a private fansite. It showed my bias out shopping, and I knew it was kinda wrong to look. But I clicked on it fast, and then I felt bad right after. I spent like twenty minutes thinking if I should say something or just keep quiet. I finally typed a message asking if we should report it, and everyone got quiet. Now I'm that person who questions every update before sharing it. How do you even handle stuff like that without sounding preachy?