I once heard a seminarian refer to his breviary as his ‘wife’.
There are sundry reasons why I can’t do that, but I hope this suffices.
By the way, you can totally say the Office aloud without getting (many) strange looks on the bus.
I like my diurnal very much, possibly even more than my Missal. This trooper has almost been around the world with me! (Tip: when on an airplane, if canonically permitted, say the Office silently. And don’t sway back and forth. Don’t ask me how I know this)