I had the same thought process as you when it came to wondering whether or not to tell Sage if Chad was gay. I knew that it wasn't my story to tell but I thought, as a person who promised to help her find out if Chad was cheating early on, it was only right that she knew what caused the rift in their relationship. I think it'd give her just a little bit of closure as well, rather than finding out later on while she dates the MC. And knowing Sage, she wouldn't simply blurt this out to anyone either, so I decided to just trust her with what I've seen and hope that she'd be able to accept me into her life, rather than questioning her management when it comes to her relationships any longer.
Dawe deserves to be alone. #FUCKYOUDAWE