When my cousin was two years old, she asked her mother the immortal question:
"Mom, how do ladies have babies?"
"Well, when a man and a woman have a special kind of love, that love turns into a baby and grows until it's ready to be born."
A few minutes later, she started crying. My auntie got very concerned, and asked her what was wrong.
"You and Dad don't love each other anymore!"
"Of course we love each other very much. why do you think we don't love each other?"
"Well, you loved each other to make me, but if you still loved each other, I'd have more brothers or sisters, wouldn't I?"
At this point, her mother went into more detail.
Well played little cuz :) .