Underage girl crushing on me is starting to get annoying. What do I do?

WeaponZero
My sister used to babysit for this girl named Katie when we were younger and apparently she's had a crush on me for a long time now. She's 16 and I'm 28, I thought she'd grow out of it as she got older (Its been almost 8 years!) but she hasn't and it's starting to seem somewhat scary, light she might be obsessing. I tried talking to her about it and telling her she doesn't actually "love" me and that its just a phase she's going thru but she's not hearing any of it and it's really starting to get under my skin. What to do?
Underage girl crushing on me is starting to get annoying. What do I do?
10 Opinion