It must be so difficult for you, i understand it myself because i ended up my 2 year old relationship for good. Before it used to hurt me so much but later i felt like whatever happens, happens for good and i think what happened with you was for good.
Slowly you will start moving on and get over this and that can only happen if you date someone because if you won’t, memories of your ex will haunt you and will take you back to the old feelings again which is disturbing so be very careful. Dwelling over or wasting your time on old stuffs is boring so don’t repeat your old mistakes again and simply move on.I came across this video that really inspired me to change myself for good and focus on all the things that i want to achieve in my life, sharing it with you http://viralexpose.com/motivational/struggling-in-life-watch-this-video-and-motivate-yourself/, i hope it brings the same amount of inspiration Good luck my dear friend.