I can tell by personal experience that finding sweets/chocolates in our desk from a "secret admirer" Is one of the coolest things a girl can live... My now husband used to do that, just like you used to, before I arrived to the office he'd leave a little something for me to "have a sweet day". When I finally found out he was the one doing so (by bribing a coworker XD) I was so surprised, and delighted, I added him on Facebook and now, we've been together for over 5 years, married for 3 and with two beautiful baby girls!