The cherry emoji has two common meanings online. The harmless and most frequent one is decorative — used in coquette, fruity or Y2K-style aesthetics, often by teen girls posting outfits or photos. A second use is sexually suggestive (referencing virginity or anatomy), but this is mostly in adult or flirty contexts. On its own under an outfit photo or playlist it is almost always aesthetic. Worth a relaxed conversation if it appears in DMs between your teen and someone older, but in friendship-group group chats it is usually just a cute decoration.