Knowing God's Personal Name

Before I had a personal relationship with God's Son, I always called him by His title, Christ (Messiah). But once I came to know Him, I started calling Him by His personal name, Jesus (Yeshua). Which do you think He would prefer to hear: "I love you, Christ" or "I love you, Jesus"? I don't think there is any doubt.

God has a personal name. The biblical writers who had a personal relationship with Him used that name repeatedly in adoration and praise of Him. Why shouldn't we? He desires intimacy with us .. John 4:23

 God spoke further to Moses and said to him, "I am Yahweh, My name is Yahweh." .  Exodus 6:2-3 
The name of God is Yahweh. Or, at least, that is the consensus of opinion by scholars. The reason there is doubt is because the name is rendered in Hebrew as YHWH. There were no vowels in biblical Hebrew, so the correct pronunciation cannot be determined from the text, and since the Jews developed a tradition of not pronouncing the name, its pronunciation was lost.