Is this disrespectful?

Last night my friend mentioned that her husband occasionally downloads porn, normally I wouldn’t consider that to be disrespectful in any way, but apparently the porn he occasionally downloads is starring one porn star in particular. When I asked why this bothered her, she said that when they first started dating, he had mentioned that his ex girlfriend looks exactly like a former, semi popular porn star (the same one starring in the occasional porn he downloads) , he even tried to show her a picture of the porn star, I guess he was bragging, I really don’t know.
Would you feel disrespected if your spouse had some kind of mild obsession with an ex?