I hadn't heard of this until today, and I realise I have been suffering from this for the past couple of years (finally coming to the end of it now.)
It started when I was pregnant with my second child. I developed a crush on my work colleague. I obsessed about him whilst I was on maternity leave, and continued to do so when I returned to work.
We are both married, and unavailable. I think we were both going through a rough spell in our marriages (mine due to my husband being distant due to him having work problems.) So I think what has made my limerence worse is at some points he seemed very interested in me, then all of a sudden didn't (coinciding with him trying to make a good go of his marriage.)
I was always trying to get his attention at work, sending him e-mails, inviting him to lunch. I feel so awfully embarrassed about it now.
The rejection I felt, even though nothing could ever have happened really, has affected me in ways I couldn't imagine. I feel sexually undesirable, and my behaviour with regards to food has been affected. I've not been nice to my DH at points. I dream about this person at night, which I really don't want to do but it is beyond my control.
It's finally coming to an end as i don't see him anymore. I'm just so surprised this happened to me as a grown-up, sensible woman.