There's no escaping. There's no place to hide. There's no putting it off until you die and go to heaven. Intellectualising is a waste of breath at high altitudes. And then, you may make love together ascending on your merged energies to a place beyond words, beyond the physical bodies, beyond the notions of time and space, and beyond Beyond.
Relationship can be an exciting path of awakening.
For us, our relationship is our spiritual path. If you find this happening in your relationship, a simple solution is to consciously plan a time to make love. Even to go as far as both getting out your diaries and setting a time. Have a shower together, then dress in sarongs, sit in front of some candles, incense burning, and soft music playing. Do some soul gazing.