Twins

Back during my dating days, I dated a woman with an identical twin sister.
But it didn’t work out.
Sure, the sex was great, and she was funny and smart, but her sister was jealous and tried to break us up.
Then, she impersonated her sister, and it totally sent things over the edge.
I didn’t realize what I’d done until the next morning, when I saw the butterfly tattoo on her left hip instead of her right.
Or was it supposed to be on her left hip?
“As if I care,” I said, and we did it again.
Twice.