If he has a crush on someone, it doesn’t mean they are better or more attractive than you. It just means he finds them attractive AS WELL as you.
The woman in question? All of her partners will have found other people attractive too.
I agree about therapy being a good idea.
I think the word “crush” also throws things off a bit. To me a crush is like a teenage, butterflies in your stomach, thinking of them all the time and getting giggly. I don’t have anything like that about celebrities and I don’t think DH does either, although I know he finds lots and lots of them attractive and enjoys watching them and presumably thinks about them in a sexual way in passing. But I do think it’s really in passing and not something that takes up a lot of his headspace. Which is another reason I think it’s more ok to have crushes on celebrities - it’s not just that it’s unattainable but it’s the fact you don’t actually know or spend time with them so you’re not thinking about them all that frequently. If DH has a crush on Jane from work it feels more like the teenage giddy can’t stop smiling type of crush where she would be on his mind all day just because she’s present.
I don’t think you answered whether you have crushes OP but i would think about that. There’s an actor from a show and I just think he’s so attractive. When insecure, I try and remember that feeling and consider the way I think about my DH alongside that. It doesn’t make me love or like or fancy DH any less at all and really genuinely even if the actor man jumped out of the TV I wouldn’t choose him over DH. I really believe that, while my DH definitely fancies Stacey Solomon, even if she somehow turned up and knocked on the door and confessed her love for him he’d stick with me.
Being attracted to your partner is important but it’s only a small part of choosing to be with them and I don’t think there’s any level of attractiveness alone that could tip the scale when you love someone.
I mean, Stacey Solomon also seems to really have a good personality so perhaps if she moved in next door and befriended him and also confessed her love then I’d have to worry. But as a stranger he doesn’t know, based off attraction alone? He loves me and I’m positive he’d say thanks but no thanks.