I've read so many of the same post, of people who are single and unhappy and granted I have my days where I can be in that boat too. I see most everyone says they are praying to God and seeking that He brings them their mate... which is cool. But sometimes I have to ask myself am I truly seeking God, because if I'm seeking him and I'm in His word, and love Him, then my heart should feel complete and I shouldn't feel alone... I'm not saying your desire for a girlfriend or boyfriend will go away... but I think if you are truly seeking God and letting him fill your heart...then maybe you won't need to think about that girlfriend/boyfriend so much...there is my tip =D
Get a hobby, adopt a child (children are awesome! - when raised right...
), be involved in the Church and wholly committed to God, understand that you are the bride of Christ and cherish that fact, hang out with friends, network, and - if it is in God's will - speed date, blind date, go on arranged dates, etc. Network with people. Come to God in prayer. He loves you immensely and he is close to the broken-hearted.
I feel for those who have gone through a divorce, because they can never remarry and be said to be following God's will. Our Savior taught us that to divorce our partner and remarry is to commit adultery (Matthew 19:8-9). In such a case it is a grave burden to be alone, but it is one heaped upon us by our own neglection of God's will. However, I've learned that it is better to be repentantly miserable than to be ashamed of who you are and to turn God against you. As I've said before, all things are possible with God - even happiness in loneliness. To those who are divorced I would say trust in him, pray for his will and examine your hearts.
God almighty and merciful bless you, my friend. Be still. Be patient. Wait on the Lord and be filled with his love. Take it easy, Shining.