I know this wont be easy for you fella, because it never is.

The absolute best thing for you at the moment is to surround yourself with close friends and family. It wouldnt help one tiny bit if you just go out on the piss and try to act as if none of this bothers you - because your human and it bothers us all when things like this happen.

Its not as easy to say your better off without her, because that was your girl but the important word in that is WAS, you have to somehow regroup and with time things will definately get easier - although it wont be overnight.

My advice at the moment would be to spend a bit of time with your friends and family but also remember to spend some time on your own, relax and just do probably what you have forgotten to do - chill by youself and make some time for yourself.. if being on your own is getting a bit of an issue have you thought about getting a dog, sounds daft but if your used to having somebody around its somebody in the house with you that you can share your time with and give you something to do take it for walks etc etc.

hope it gets better fella!