My boyfriend loves his ex-girlfriend

knew that my boyfriend still loves his ex-girlfriend 

I need help advices what can I do ?

It's been almost 2 years ago since his ex-girlfriend left him ... we are together since 1 year ago and it's long distance relationship we only talk over the phone and texting he came to see me the last year for the 1st time then he told me that he loves me and were planing to come to see me again this summer because he said that he missed me and he wanna see me etc ...but now it's been a week ago I discovered that there is something happened to him he became so cold with me even when i call him we talk he was so cold so sad I startedd to feel that he don't love me anymore after that when i asked him what happened he told me that he feel brutally broken and that he is so sad and unhappy and that I should maybe leave because he can't make me happy .i tried to understand what's the reason of his pain i kept asking him but he told me ( I don't know ) and avoided my questions then he posted something on his fb saying that ( if my presence didn't make any change in your life then my presence in it has no meaning) i knew that the reason of his pain was a woman that's why he was cold with me and avoiding my questions so I asked him if he met his ex-girlfriend . so he told me that his ex-girlfriend is going to get married soon , and he posted on his fb that he has never been so broken in his life as this day because the person that he loves is going to get married with someone else instead of him and that this woman meant everything for him and now he will never be happy and he is so broken inside his heart is burning....so I told him if he doesn't love me and he will never love me he should leave me so I will be able to see my life with somebody else I told him to block me from everywhere. But he refused and he told me that he loves me . I tried to be nice to him but all what he say is that he is brutally broken and so hurt . what should I do ? I stil love him but i am so confused ? I don't know what to do ...