One suggestion: Husband and wife may hold each other’s hands while reciting this prayer.
O God, we want to live our life together with you and always to continue it with you. Help us never to hurt and never to grieve each other. Help us to share all our works, all our hopes, all our dreams, all our successes, all our failures, all our joys and all our sorrows. Help us to have no secrets from each other so that we may be truly one. Keep us always true to each other, and grant that all the years ahead may draw us ever closer to each other.
Grant that nothing may ever come between us and nothing may ever make us ever drift apart. And as we live with each other, help us to live with you, so that our love may grow perfect in your love, for you are the God whose name is love. This, we ask, for your love’s sake.