Gmail May Know Too Much

I was just emailing someone a "Dear Old Love" link and as I typed an email address into the "To:" section of my gmail, five addresses popped up after the first two letters. Of the five, three were men I dated...

At the bottom, was my first love and the most difficult to get over.
In the middle, was the one that I had the most fun with and drove me the most crazy.
At the top, the one I was sending the link to, is the one I still wonder about.