Triangulating – 2 friends

I learned the term triangulating in traditional therapy years ago, but honestly had not experienced in my adult life outside of family dynamics. This weekend, I was on a zoom call with a group of friends. Two of the friends had a disagreement. I felt very uncomfortable and did not join in the conversation. Later, one of the pair texted me to say “Does X make you a little crazy, or is it just me? I am losing my patience with her more and more . . . ” I really do not want to be put in this situation. Every way I’ve thought of to say that to the texting friend sounds judgey to me, so I’m just avoiding replying to the text. I don’t know if silence is golden in this situation or if I need to explicitly state this boundary.