Reddit is filled with creeps who want company in their lonelyness. You're young enough to not join them. If you're this mortified about giving her the sticker, you must know how it looks and seems to her. This can either become an embarrassing story you end up telling on a date or something that you let define you and make you bitter towards women.

I say that as an atheist who thinks sex work is work and deserves the same status and Rights as any other I'm not a religious prude or morally against sex. The hentai stuff is creepy though, a guy in my class had a magazine with a very young looking woman and a tentacle monster, 20 years on if I say "I saw creepy (guys name) in the garage" to a school friend, they know exactly who I mean, even if they were a different year. What was funny to him, and only him as a teenager means adult women still recoil and shudder now.