Fair enough. I see where you're coming from and I guess it's only natural that we will feel that way from time to time. However I don't think we should base our absolute happiness upon being with a significant other, everyone is worth a lot with or without a partner and we aren't better or worse without a partner.
But yeah, I hear you.
To love is to suffer. To avoid suffering, one must not love; but then one suffers from not loving. Therefore, to love is to suffer, not to love is to suffer, to suffer is to suffer. To be happy is to love; to be happy then is to suffer, but suffering makes one unhappy; therefore to be unhappy one must love or love to suffer or suffer from too much happiness. I hope you're getting this down.