I have a pet peeve

Why is it that the SECOND someone has a breakup, they feel the need to change their relationship status on facebook?  But not only that, they then get offended when people want to know the details!  What happened?  Is this real?  I thought you guys were happy?  I actually saw this morning on my facebook that someone changed their relationship status from in a relationship to single and then 2 mins later, before anyone wrote anything, wrote "I'd prefer if people don't ask me about this yet".  Okay....  Then why did you announce your new relationship status over facebook?  That would be like me changing my status to "I'm pregnant" and then saying please don't talk about this or ask me about it.  Why would you even announce it to begin with?  I'm all for sharing whatever parts of your life you choose to on facebook...to each their own.  But you can't drop a bomb on people like that and then say, please don't talk about it yet!