You shouldn't butt your nose in to your friend's relationship.
Josh's married friends were constantly at each others throats, and Josh wants to know why.
Josh wants to help his friends.
Josh decides to just support both of them, without butting in.
Josh snoops around, asking his other friends their opinion on how to help.
Josh's friends appreciate his consideration and get closer with him.
Josh's married friends find out and get very upset at him, not talking to him again.