Create wordpress "Invitation Friend" plugin extends "Mingle WordPress Plugin".
1. Create custom page with InvitationScreen.
1.1 Invitation screen must have input email addres field and send button.
2. Send Invitation email with:
2.2 Owner name in Header and Body email.
2.3 Invitation link in body email
3 Invitation link added person automaticly to friend list. Friend request is disabled.
4. Plugin settings: body email content and "custom page Invitation Screen" display in Mingle Submenu in admin menu.