It was very much out of the blue; I didn't see it coming.
I went about my daily routine - work, study, watch TV, read etc. - and it was only a couple of days afterwards, when I absent-mindedly missed him and was halfway through texting him that I realized.
Yes, it sounds stupid, but I was absolutely broken after that. My confidence was shattered, I thought it was all my fault and I simply wasn't good enough.
I came up with a list of things I wished to say to him; I wanted to scream, call him all sorts of names, even wanted to ask why. But then I thought how pointless it would all be; what's done is done, after all.
It took me about three months to get over him, but now I'm much better. Honestly, if there's one thing I can say to anyone going through a rough break-up, it's the fact things will get better, cheesy as that sounds.