I have the same prayer request. A couple of months ago my best friend left me and now I am trying to start my life over, struggling against thoughts of despondency and experiencing emptiness. If you want to know my story, you can read it here:
A story about personal life and love drama
Also I would like make a prayer myself for those of us who are lonely:
Dear Lord God, have mercy on us and hear our prayer for all of us who are lonely. Heavenly Father, we humble ourselves before You. We would like to talk with You face to Face, but we are fallen human beings and it is not granted to us to talk with You and be in communion with You like our ancestors Adam and Eve were before the primordial fall. Having no spouse and no friends we suffer from terrible loneliness, struggling to find clear meaning and purpose of our lives. But we firmly believe that it is Your will for us to live until You decide for us to depart from this earthly life. We obey You and continue to serve You as good as we can. Please lead us to true happiness of knowing You and of being in close, good relationship with You. Instruct us and guide us in doing Your holy will, may we fulfill all Your expectations from us. In the name of the Father, the Son and the Holy Spirit, in Jesus' name, amen.