Facebook and my virginity

Facebook was launched in February 2004. I lost my virginity in February 2005. These seem like unrelated occurrences (no, I didn't lose it to the Zuck) and they were until today. Yes, I have much better things to write about that include what happened this weekend, but I cannot get over what just happened.

I left my Blackberry in my purse for most of the afternoon. Then when I checked it a few hours later, I had a friend request on Facebook. I was curious to see who added me (wondering if it might be my ex who got away) and waited for a few seconds while the message changed from "Facebook User" to the user's actual name. Then I read it. And I read it again. And a third time. I froze, phone in hand, almost dropping it on my keyboard. That name was very familiar, but also fairly common, so I went online on my computer to confirm it. There it was, clear as day: "Facebook User" was the Canadian guy I lost my virginity to almost 7 years ago. I haven't had any communication with him since 2007, and barely any since I last saw him in July of 2005. And he found me on Facebook. Not only that, he's no longer in Canadia, and now lives in Jersey. So, a few questions are kind of killing me right now: how does he remember me? Why does he want to be friends on Facebook? Why did he look me up after all these years? How has he not forgotten me?

Here's a little background: him and I knew each other for about two weeks when he swept me off my feet with the killer line "I want to have breakfast with you", whispered in my ear after dinner at a park on a chilly Argentinian night. We had sex at a nice hotel, he knew he was taking my virginity, and he was super nice about the whole thing. Meanwhile, I came away with my first sexual experience, a great story to tell, and an acquaintance who I'd probably never see again. We emailed. He turned into a friend. When I saw him again in July of the same year when I was in Canada, I tried to kiss him but he turned me down with no explanation. I was ok with it, he took me to a concert and we had fun. Wee emailed a few times after that, your usual "Haven't talked in forever! Where/how are you?", but even that stopped in 2007. Now it's four years later, and he still remembers me, my complicated last name, and tracked me down on Facebook. How the hell does that even happen, and why is he doing this?