You are hurting now, because you once love deeply. Like what the
other posters here have said, you need time. As for how long will
it take for u to forget him and completely move on in life, its all
up to you.
While I don't know the story between you and your ex, somehow, I
think that you have make the best decision for yourself, because
you were stuck in a relationship that were leading to nowhere, and
that you are hurting a lot from it. Getting out of it is the only
thing you could have done. All you can do now is continue your
routine. Go school/work, play your fave sports, or even take a
short holiday abroad. Absorb all the beautiful scenaries abroad, go
and visit some wonderful places, and get more knowledge about the
places you visit. When you come back to Spore, while you probably
hadn't forgotten the bad episode, you would have at least make
urself more fresher, and probably on a faster route to
forgetting.
Just remember this, u are not alone in this world. Your friends may
have scold u for what u did in ur past relationship, but in the
end, they care for u. All we can do here is to provide a "listening
ear" and give u advice. They are the ones that provide an arm, a
hug, and everything u need. They are the ones who care more about
u.
Do take care girl, and hopefully, in a few days, weeks or months
time, you will have walked out of this dark episode of ur life, and
into a bright, new one.