AITA for telling my daughter that her mom cheated on me when my daughter said my new girlfriend looks like an OnlyFans chick ?

Throwaway account and fake names. I (49m) got divorced from my wife Emily (49f) because she cheated on me with multiple men. We have a son and a daughter. Our son Nick (22m) has always been closer to his mom, and our daughter Skylar (19f) has always been closer to me. Not knowing why we got divorced, the kids took their mom side. I recently started dating Lisa (54f). She has a fun personality, she’s smoking hot, and she dresses very, fun. When I introduced Lisa to my kids, Nick took a liking to her while Skylar looked annoyed. Days later, Skylar said that Lisa looks like an OnlyFans chick. If you knew Skylar, you would be shocked that she would use that as a way to insult another woman. I told her that her mom Emily was the one who cheated on me, and that I met Lisa after the divorce. Skylar got just said “oh” and she got quiet. But the next day, my ex-wife Emily confronted me. I reminded her that I never promised to keep her cheating a secret. She said that I “implied” that it would be a secret based on the fact that I never said whether or not I would tell our kids. Am I the asshole ?

EDIT

Something of an update since I posted.

Even though my daughter is in her bedroom, in my house, I messaged her because she said she doesn’t want to see anyone. She sent me a very, very long message she had written beforehand. In the message, my daughter admitted that her mom and her maternal aunt said those kinds of things about Lisa. She said she’s embarrassed that she repeated those awful things. She said she thought that I was the one who cheated on her mom. She said she thought I had cheated on her mom with Lisa. She said she’s not mad at me. She said she’s mad at her mom. She said Lisa seems like a wonderful woman. She said she wants to talk about this face-to-face but not anytime soon. She said she’ll tell me when she’s up to talking about it face-to-face when she thinks she can do it without crying.