Well, in Tobit, it seems to work out pretty well, but I can relate somewhat to what you’re saying. I’ve heard that said before, but considering what the intimacy spouses already share, it seems to me that a deeper spiritual intimacy between them and God would be quite beneficial.
8:4 And after that they were both shut in together, Tobias rose out of the bed, and said, Sister, arise, and let us pray that God would have pity on us.
8:5 Then began Tobias to say, Blessed art thou, O God of our fathers, and blessed is thy holy and glorious name for ever; let the heavens bless thee, and all thy creatures.
8:6 Thou madest Adam, and gavest him Eve his wife for an helper and stay: of them came mankind: thou hast said, It is not good that man should be alone; let us make unto him an aid like unto himself.
8:7 And now, O Lord, I take not this my sister for lust but uprightly: therefore mercifully ordain that we may become aged together.
8:8 And she said with him, Amen.