I posted a story of me and my sister. Plate doesn't know it's my sister in the photo. She replied with "cute af".

I don't know if its sarcasm or not, but out of many pictures she replied specifically to the one I'm with another female, in this case my sister.

I know she fucks other guys and I dont care as long as she doesnt show with photos with them. If I play this game I will lose.

How to react? I was thinking to say "runs in the [my last name] genes"