Have you ever tried to apologize for what you done wrong 9 months ago? If you still care about him, and if you still love him, give both of you a chance... You never know whether he really feels as he behaves: maybe he is also hiding himself in front of you. Also, as outsiders, we have no clue about what you have done and how much that hurt him, so we cannot judge whether there is any chance at all -- but you should be able to tell and decide what to d maybe with your best friend's help.

If you think it's time to say goodbye, do it and bear the consequences. You will feel bad and hurt, especially when he is around. But that's the price for love -- people cannot grow without these pains in life. You will find your Mr. Right sooner or later, but do cherish him and cherish your love. Love is delicate and you need to "culture" it with all your heart. Don't ever try to hurt it: even once.

Good luck, hope you will be happy again soon!