Short answer: Remove the member from your Friends — only friends can send relationship requests.
Do this
- 👤 Me → Friends.
- 🗑️ Find the member → Remove friend.
- 🛑 Still bothered? Open their profile → ⋮ → Block user.
- 🎫 Need help? Contact Support via the Ticket System.
💡 Tip: Only friends can send relationship requests.