Hearts hurt more when they break slowly

So...I am technically single. Have been since the end of spring semester. Yet I still have the thought in my mind that I'm taken, part of a couple. Like I still belong to someone and that someone belongs to me. It sounds silly, but while my facebook status says I'm single, my mind and heart still believe that I'm not.

When I talk to my ex-boyfriend, sometimes I feel like the two of us are almost still acting as though we are still in a relationship (we've tried to remain friends, you see), and yet as more and more time passes I feel slightly more distracted whenever we talk. I can tell he's not really committed to talking to me, either. On the rare occasions I do hear from him, he is distracted and doesn't really...talk to me. It's more like the "uh-huh. mhmm" you'll get from someone who is just saying stuff to make it seem like they're listening.

I don't know. I guess I'm feeling tossed aside and rejected again. Is this what a break-up feels like? I suppose that they do. First time for everything, right?