After a long conversation...
You go to Darth Maul and discover you are both suffering from a case
of amnesia from a lightsaber blow to the frontal lobe of your brain
which is also partly the reason why you are having mood swings.
"Remember the time we had sex?"said Darth Maul.
"No!"
"Me neither. Because it turns out we both have amnesia!"
"Why?"
"Because when we were fooling around in the back of Qui-Gon's
Starfighter my double-bladed lightsaber accidentally turned on and
struck us both in the head."
"I don't remember that!"
"Neither do I!"