Stalker much?

So, I sent an e-mail to someone on match.com (okay I sent alot of e-mails) and I got a reply! I think I have already established how rare that actually is. To be fair, let me say that this e-mail was actually sent by one of my accomplices. We sit on the phone together and go through my matches. I don't think it really matters, but I wanted to be honest about the process. Anyway, this person, we shall call him "B", responded. It was just two days ago and I honestly had not gotten around to responding. I don't think two days is a whole lot of time, besides, he took about two days to write back to me.
So this morning I turn on my computer and sign into my personal e-mail, my work e-mail, and facebook. It is my morning routine once I get to work. But, whats this? An e-mail on facebook? I thought maybe it was from one of the bridesmaids for my sister's wedding, we have been e-mailing back on forth about bachelorette party ideas (and since sister, you are reading this, I will not be going into further details on that!). No, it was an e-mail from "B"! He had looked at my match profile, took some of the information and found me on facebook. Um, I won't lie, that is just a little extreme, don't you think? I mean, jeez, it was only two days ago that I got your first e-mail and now you're e-mailing me on facebook?! I don't know how I feel about someone doing that, it seems a little stalkerish to me. Which I won't lie, we all do it (come on, you know you google your friends, boyfriends, girlfriends, even yourself!!) but this is someone I have not even met or spoken to yet. I don't know how to respond. And where, match.com or facebook? Should I look at it as flattering that "B" went through that much trouble? Or should I be freaked out that he pushed a little to far?