Just remember that God does not partake in semantics when it comes to salvation. It is put very simply:
"For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life"
Believes in him?
He was still speaking when, behold, a bright cloud overshadowed them, and a voice from the cloud said, "This is my beloved Son, with whom I am well pleased; listen to him."
believes that He is the son of God, and what else?
1 Corinthians 15:3-4
For I delivered to you as of first importance what I also received: that Christ died for our sins in accordance with the Scriptures, that he was buried, that he was raised on the third day in accordance with the Scriptures,
Why did he die? Go back to John 3:16 for the answer
What about water baptism?
"I baptize you with water for repentance, but he who is coming after me is mightier than I, whose sandals I am not worthy to carry. He will baptize you with the Holy Spirit and fire."
This scripture leads me to believe that a water baptism ceremony is not the key to being saved, yet the above scriptures outline what it means to be saved. And staying saved?
Now after John was arrested, Jesus came into Galilee, proclaiming the gospel of God, and saying, "The time is fulfilled, and the kingdom of God is at hand; repent and believe in the gospel."
That sums it up right there, live your life repenting and reading and believing the Bible. I do believe a relationship with Christ is just what it is, it can be called a relationship because we are living;as well He is living. Two living beings together as such sounds like a relationship to me.