So, loneliness is not the result of not finding the right person "out there." Loneliness is a state of being that is caused by an inability to make a loving connection with part of yourself. In other words, this inner separation creates the vibration that spawns the experience of outer separation.
The companion you seek is not really a new person to be met, but a new depth within you to be discovered. The greater the degree of your awareness of this, the more power you will have to attract the perfect helpmate or draw supportive love from present relationships.
So if you are lonely, the place to start is not being on the lookout for that special person. The place to start is looking within for a new connection with yourself.
Over the years, I have observed a number of people, who after doing everything they could to find that special person, found them when they stopped looking. Why? Because, whether by accident or on purpose, they turned within and made peace with a long-ignored part of themselves. They found peace, and peace is just another name for God. Once they were in that state of being, the perfect person was drawn to them.