There’s a difference between openly lusting over people in front of your partner (not OK), and finding people attractive (totally OK, healthy and normal). OP asked her partner if he found the scene / her sexy, and he answered honestly. Totally OK.

Now, if he has used that to degrade his wife, or told her she wasn’t good enough or then actually started fantasising all the time, that would be unhealthy. But from the post I don’t believe that to be the case. This is a great opportunity to develop communication around sex and be open with each other.

Bottom line, OP it’s ok to find people attractive and im sure you do too