Follow up question, have students ever declared their affections straight out? Have they tried to not so subtly hint at very suggestive situations? That's probably not how it works in reality, but alas, I have only read books.
Aesop leaned back in his chair for a moment, reminiscing on a rather uncomfortable memory he tried his best to suppress. Though much like the incurable pain in his knee, there are some things a person simply doesn't live down easily - and his colleagues liked to remind him of that. Still, he had hope for one, so why not the other? Chuckling to himself he reached for his quill...
Miss Devereux,
I'm sure it hasn't escaped your notice, at least one student in a class asks me about it, that any personal effects I carry with me are... for a lack of better description: quite well secured. Whether it be with a double buttoning pocket, an exceptionally well charmed wallet chain, or simply keeping the item so well hidden on my person that only a fool would go fishing for it, I do keep an exceptionally close eye on my belongings.
Likewise, there are several locked cabinets in my classroom, and several more I keep in my personal office. Much to the chagrin of would-be pilferers, a simple Alohomora won't be enough to get them open (though I do so enjoy a laugh at watching them try, when they aren't aware I'm nearby). I, and only I, carry the sole key to each of them - I assure you this is relevant to your inquiry.
I hadn't been a year or two separated from the Ministry, and in my role as Potions Master when, well, I'm afraid I was a bit careless. Perhaps my experiences as an Auror still predominated my thoughts... or, perhaps, I had simply forgotten what incorrigible little bastards some teenagers can be. Forgive my brusque generalization.
I'm not sure how the concoction was brewed, or otherwise "acquired", but an unknown Slytherin student managed to spike my personal stash of Firewhiskey. ...with Amortentia. Just enough to be effective, and just a small enough amount even I didn't notice the change in aroma - I suppose I can commend them for their expert dosage, at least.
Fortunately, I'd already locked myself into my personal quarters for the night - less fortunate was I when @ask-professor-weasley came to investigate a commotion she likened to, in her words, "a rabid, lone wolf gone mad, trying to rut the moon". She and I haven't spoken of it since... and I appreciate Matilda's excellent tact.
Other than that, it's mostly anonymous love letters and crude notes I confiscate during class. I keep a box of my favorite, and most embarrassing ones in the top drawer of my desk, if you are ever in want of a good laugh.
Yours,
Prof. A. Sharp