I’ve found out that my friend puts me on loud speaker when her partners there . She told me she does it to save her telling him something afterwards. They are very general chit chats - absolutely nothing he shouldn’t hear. My friend and I have never fallen out - so it’s not like she needs a “witness” to our conversations , we also chat a lot when he’s not there. I guess it doesn’t really matter - but it would never occur to me to do that . It’s made me feel slightly uncomfortable tho