Yes, by all means, see a L. Your "best friend" has become someone you can no longer trust. Friends don't bail on you.
Also, what's up with the "are you mad at me" bit? Are you freaking kidding me? She wants out and then blames you for being "mad". This is just her projecting her sh!t onto you to absolve herself of any guilt. She should feel guilty. Sickness and health, right?
