RelicDreamer - I'm not quite sure how I got the glasses. They're called the Apathetic Shades, and they appeared in my inventory and under "Unlocked Rewards" on the Valentines Day Event page yesterday. I'm not sure what I did to get them, but here are my stats on my page as they are shown, backwards and all, as of now:
Outgoing Valentine Requests
Accepts: 14 Declines: 2
Incoming Valentine Requests
Accepts: 59 Declines: 24
I do remember that when I first noticed the shades, I had exactly 9 declines from other people and one that I had given to someone else, and that I had around 45 accepts from others. Your guess is as good as mine as to what unlocked the shades.