fadra
A Fadra is a fake, lying, backstabbing friend who will take your ex the second you break up. She'll pretend to be nice, but she's just waiting for the perfect moment to rip your heart out.
You break up with your ex. Fadra: 'Oh my gosh, I just took your ex! What are you gonna do?'
Fadra texts you: 'Your ex is now my ex. I'm so happy, and you're so sad. That's just life.'
You: 'Why did you take my ex?' Fadra: 'Because I'm a Fadra, and I love stealing things.'