I know, how difficult it must be for you. But you should try to accept the reality and try to outgrow this feeling.
I am sure there must be other things in life that are on a priority right now, how about keeping yourself engaged in that and focusing on yourself.
Well leave him alone. Focus on yourself and move on. Your life is much more than this relationship and trust me you will get someone better then him
focus on something u like and start doing it :)that makes thedifference
its a hard time and we all have gone through it, i wish u get more and more strength and try to get into work u have many more things to do than him, lots of love from here, u r strong