I've been on here for years but name-changed as I'm so embarrassed 
To give a bit of context I'm 36, married with a two year old and a six year old and have a busy, stressful full time job that has been made more difficult by the pandemic. I had bad PND and anxiety after DC2 and have mostly recovered but still have my moments. I am also peri-menopausal, not sure if that's relevant but I suppose it might be.
I feel so ridiculous even writing this but over the past couple of months or so I have developed a very intense crush on a particular celebrity and I'm worried it's gotten out of hand.
It started after I had a very vivid sexual dream about them. Prior to that I'd always liked this person's work and thought they seemed nice but not thought about them in 'that' way. But I found myself thinking about this dream whenever I needed a bit of (ahem) 'me time'. I know this isn't unusual in itself but over time I then started day-dreaming about this person too, imagining scenarios in my head involving us meeting and embarking on some sort of passionate love affair. I've been spending too much time looking at their photos and content online, YouTube clips of them etc which is the sort of thing I'd expect from a teenager not a grown woman who is normally quite sensible! This is incredibly embarrassing to admit, but I've even found myself occasionally choosing my outfits based on what I imagine they might like and listening to music I think they might be into (although this does align very closely with my own tastes anyway) which I know is beyond ridiculous.
The fantasy day-dream scenarios are happening daily and have become increasingly detailed. In them I am always single, child-free, enjoying a creative and fulfilling career that is lucrative but also somehow affords me bags of free time and living in a small but beautifully decorated flat (which I could describe in detail at this point!) with no stair-gates, laundry and plastic toys everywhere. This is a far cry from my real day to day life which, although I know I'm lucky in many ways, I confess to having felt somewhat trapped by recently especially with lockdown and everything. I think this started out as a bit of escapism but I'm worried it's making me more dissatisfied with my real life.
To be clear, I know none of this is real. I would never dream of actually trying to contact this person, nor am I operating under some delusional belief that we have a 'connection' or anything! I also know that if our paths crossed in real life (which is vanishingly unlikely) they would not look twice at me, although I used to turn heads when I was younger. Maybe that's part of it, struggling with the fact that those years are behind me and I'm just a frumpy Mum.
Has anyone else ever felt like this or am I the only one? More importantly, how the hell do I make it stop?? I know the obvious solution seems to be "just stop thinking about him" but I've tried that!