No, OP has admitted she is struggling in her own words. And no, it's not "a bit of a crush", as she has stated in her own words. It is intense. It is horrible. It is like being a teenager, she stalks him online.
Changing jobs is not nearly as big a deal as losing your future with a man you love or turning into a cheater.
She can try to ignore her extremely strong desire to have sex with this man, of course. But she is trying that and it isn't working which is why she wrote to strangers asking for advice.
If ignoring it as working, she would not have done that.
She can hope that he has no interest in her at all, which is quite possible, so providing nobody else cottons on to her obsessive infatuation all will be fine, even though she will find it hard.
My advice, which is sound and reasoned, is to move jobs if it is causing her the distress she has stated it is causing her.