We exist.
You're spot on with the authenticity part which goes far beyond the hot heat of the momentary love-making, inevitably resulting in a deep creampie; you have to discuss the realities together when you're out of that mode. If the answer is still "YES!", that's authentic for us.
She's had two late periods (one we think sadly was a very early miscarriage) where we both were legitimately disappointed when her period began. While she isn't deliberately planning it, she's off BC, fertile, and we want it.