That is downright mean. If you didn't approve then don't take the picture.
If someone asks me to take a picture of them I take a picture of "them" and whoever is with them. I don't care if it's a woman and a sugar Daddy or a woman and her "pool boy".
I have no idea what the story is: As long as one of them doesn't look like they are being forced to be with the other or one doesn't look underage I don't give a damn and they are as entitled to have fun and remember it as anyone else.
At least they were having fun. Unlike some married couples I've seen who look like they want to kill each other or would rather be anywhere than with their spouse. Those are the ones who will be cutting the other out of the pictures sometime in the future.