You might feel far from Christ right now, but if you really were as far from Christ as you think, you would not be crying about it. You would be indifferent. You would say, "Who cares?" But as it is, you truly are remorseful for the mistake you made, and you want Jesus back in your life. Would a person who is separated from Christ be in tears because of the loss of that relationship? Your mourning over you sin is a clear sign that the Holy Spirit is working in you, and is alive in you. So, what have you done with this remorse? Have you gone to confession? This is step number one. In confession, you don't just get the sin taken away, you get special graces from God to understand his will in your life, and to avoid the sin in the future.
Step number two after seeking God's forgiveness is to start working on forgiving yourself. You are not worth less because of one mistake. You are still worth waiting for, and it is essential that you realize this. So often, a girl will lose her virginity and think, "Well, once it's gone it's gone. What good guy would want me now?" Then, she falls more easily into the same stuff with guys in the future. To prevent this, look back at how you fell, and what led up to that.
What could you have done differently? Had your prayer life dropped off, or altogether disappeared? Were you with a guy you knew did not have the same standards as you? Were you hiding stuff from your parents? By looking at which poor decisions were made, you can learn from the past and be stronger in the future. In the meantime, read these words by Mother Teresa, and read them often. Do not give in to despair, but stay close to Jesus, because he does love you.
"I worry some of you still have not really met Jesus one-to-one, you and Jesus alone. We may spend time in chapel, but have you seen with the eyes of your soul how he looks at you with love? Do you really know the living Jesus, not from books but from being with him in your heart? Have you heard the loving words he speaks to you? Ask for the grace: he is longing to give it. Until you can hear Jesus in the silence of your own heart, you will not be able to hear him saying "I thirst" in the hearts of the poor. Never give up this daily intimate contact with Jesus as the real living person, not just the idea. How can we last even one day without hearing Jesus say "I love you"? Impossible. Our soul needs that as much as the body needs to breathe the air. If not, prayer is dead, meditation, only thinking. Jesus wants you each to hear him speaking in the silence of your heart. Be careful of all that can block that personal contact with the living Jesus. The devil may try to use the hurts of life, and sometimes our own mistakes, to make you feel it is impossible that Jesus really loves you, is really cleaving to you. This is a danger for all of us. And so sad, because it is completely the opposite of what Jesus is really wanting, waiting to tell you. Not only that he loves you, but even more, he longs for you. He misses you when you don't come close. He thirsts for you. He loves you always, even when you don't feel worthy. When not accepted by others, even by yourself sometimes, he is the one who always accepts you. Only believe, you are precious to him. Bring all you are suffering to his feet; only open your heart to be loved by him as you are. He will do the rest."