In the Disney movie "Enchanted" there is a song called, "How Does She Know?" about how does the guys girlfriend know he loves her? Does he send her flowers or write her love notes?
But how does God know we love Him? Of course He can see everyone's hearts, but do we actually outwardly show we love Him?
God asks for our all. All of our love, our time, our lives. So if we're really doing that, shouldn't it show?
God loves us, but the Bible says, "Faith without works is dead." Let our actions show everyone that we are Christians.
It is a privilege to be called a Christian, so don't act as if it is a burden or something you should be ashamed of, wear it, speak it, and live it. :) God didn't save us so we could continue on the way we where. He did it for His own glory and because He loves us.