I've done a differential game model
On our partnership
The results are what you'd expect
Based on effort and appeal
Our love it is ideal
Cos we've both so heavily invested
But it's not the sunk cost fallacy
That keeps us together
It's the ongoing returns
And compounded interest
Not the sunk cost fallacy
Why we go on forever
It's a high-yield bond
Vs a high-heeled blonde
I've learnt the economics of love
It's growing exponentially
A concave curve
Building on our saving reserve
With no signs of fragility
And maximized utility
Returns are much greater than cost
But it's not the sunk cost fallacy
That keeps us together
It's the ongoing returns
And compounded interest
Not the sunk cost fallacy
Why we go on forever
It's a high-yield bond
Vs a high-heeled blonde
I've learnt the economics of love
The coefficient of variation
Of our love affair
Shows mutual benefits
Of which we're both aware
Perceived costs are low
Cost of separation is high
Net benefit's optimized
But it's not the sunk cost fallacy
That keeps us together
It's the ongoing returns
And compounded interest
Not the sunk cost fallacy
Why we go on forever
It's a high-yield bond
Vs a high-heeled blonde
I've learnt the economics of love