Update on Something Slightly Cheery

Mood:  CONFUSED???

My best friend's girlfriend kinda broke things off with him...  But not really?  She says that she doesn't want to meet with him, only talk and text him, there's a chance for something between them, etc.  She's rescheduled and canceled all of their date plans.  To me that sounds really odd, definitely suspicious.  He said she'd done something very similar before when they went out before, and she ended up ghosting him.

...Do I need to say something to him about how I feel?  How do I let him know?  Should I let him know?  I DON'T KNOW!!!