How does your faith survive when you don't feel it? During these times are you no longer a Christian? Do you have to feel it to really be saved? How does this parallel marriage, and how marriages seem to end when the love evaporates?
There is a huge misconception running rampant in the world today. It's about love. Underneath this is the surprising assumption that we deserve to be loved. Do we really? And how do we love God?
People get divorced because they don't feel the love any more. But this misses the essential aspect of love that is shared by the Christian faith towards God: "Commitment". Love for a spouse requires commitment, even when you don't feel the pleasant feelings of love. Love for God requires a commitment to the mental assertion that God exists and that He is who He says He is. The feelings may come and go, but they follow the commitment.
So do we deserve to be loved? If you properly understand the nature of sinful, fallen man then the only answer can be, "No way do we deserve this!" But knowing that you don't deserve to love or be loved should make your gratitude for love, and commitment to love, much stronger, so that it survives the lack of supportive emotion.
And there is no excuse for your marriage to fail due to a lack of love unless you have failed to love through commitment. Likewise your faith.