Yes, every person has a spiritual life.  You may invoke the name of God, Jesus, higher power, whatever, there is no escaping that every thing you do, say reflects some kind of spiritual value stated or otherwise.  At some level it does not matter what name you give it.  There is no escaping this.  Every action, every thing, even your thoughts reflect something even if you do not define it yourself.  Every thing you believe is reflected this way.  People around you usually know what you believe in your inmost being given enough time.  Certainly this must be true of those people closest to you:  your significant others–friends, mates who see you under fire.  It is too easy to invoke the name of God.  It is easy to tell another this is what the word of God (whether it is the Bible, the Koran or any other holy book) says but do you really believe this is the truth, this is what you believe in your heart and soul.  Hypocrisy is always recognized by others.  No one likes a phony.