If relationship with others can not give me love that is permanent then I need to work on the other sources of love, having relationship with God and with the self.
To have a relationship with God, firstly we need to know and secondly we need to believe in Him.
Everyone of us might know God. At least religion has taught us this. We could understand God quite quickly. It doesn’t take time. Perhaps we also believe in Him. It is also very easy.
But that is not enough. To know and to believe is not enough. It doesn’t guarantee you to experience a relationship with Him. It doesn’t guarantee you to experience love from Him. The process of knowing and believing takes place in our head. It is very often so theoritical. God as a concept. While to experience love is practical. The feeling is real. God is not a concept. He is a Spiritual Being like us.

So the third step is to experience Him in a relationship. This step probably takes a long time. It requires so much patience.
How to really have this feeling of love? Put what you have understood about Him into your practical life, on your day-to-day basis. Keep experimenting on this. Only through an experiment by experiment you can really experience God’s love. Challenge yourself by asking provocative questions on what you have understood about God, what you have believed in Him. Reflect those questions again and again.
Once you taste His love, it is fulfilling your heart’s desire for love. There is no better love than this love.
When you taste this true love, your search for temporary love from human being will end. You won’t depend on anyone for givibg you love. When you are in relationship with anyone, you are not seeking love but giving love.