Did those things edify you or your relationships with your friends in some way?
I am in a situation where I can not tell my wife certain things (work-related).
But as far as situations where it is something a friend tells one of us, it should be expected that the information could be shared by both of us. As others have mentioned, we are one, and we do not keep secrets. That doesn't mean we share everything necessarily, because the information may not be of interest to each other.
If someone specifically asked me not to tell my wife something, that would raise red flags with me. If it's like, "Hey, promise you won't tell your wife, but we bought her this gift." well, yeah, I would make sure to not tell her.