Well, its not that bad. Quite frankly my ex did the exact same thing, I didn't have facebook and then one day I thought "meh why not, just for her" well, that would arose some suspicion cause when she added me she was reported as "single" and knowing her for years, she isn't the type of girl that just "forgets" to update those types of things. We still talk, although she'll never admit why she broke up with me, I know she has a guilty conscious about it.. Honestly, it's been nearly 3 years, she needs to stop thinking I care.
HOWEVER, OT: I have had worse. Worst break up of the 3 I've had. My ex before the last I just told you about, we got into a bit of a fight one night and she went to a friends house. A friend I didn't know she had. So when this guy comes on MSN under her name and starts cussin me out, I'm not thinking this is really real. She then gets on and then breaks up with me, I completely get the wrong idea. My first gf cheated on me, so naturally I'm a little paranoid. I quickly put this senario in my head: She's at HIS house, I don't even know who HE is, or even heard ay mention of HIM, and she breaks up with me suddenly.
Whelp. That turned out to be the completely wrong idea. The "HE" in question was gay... Really gay... So two days after I accused her of cheating on me, I find this out, and I've never felt like such an asshole in my life. After I explained myself, she did understand my side and we both apologized for not making it easy on either of us, but it was better not to talk to each other anymore.