Please help, I'm in so much pain and I don't know why
This is kind of a long story... but I'll make it as short as possible.
About three years ago I fell completely in love with a man, he was a little bit younger than me. We were crazy for each other. From the very start he had told me that he was planning to move to Greece for a year to do his masters so we continued our relationship and stayed in touch when he left. He did go through a period of not speaking to me for about 6 months (which I was suspicious of but because I had just moved to a new city I was having a great time, started a new college course myself and new job, everything was great, even without him).
He messaged me out of the blue to say that he was actually going to stay for another year or two to complete another course, we then very quickly fell back into a kind of cyber long distance relationship. I was kind of disappointed because I was looking forward to seeing him again, but I guess I was happy for him. And thought as long as he visited it might work.
So here is the thing... He kept saying that he was coming home for Christmas, then his passport expired and by the time he got a new one from the embassy he had to sit exams. He then planned to make it up to me over the Summer for a few weeks. He didn't come home... he stopped talking to me for a few weeks. I don't know why I didn't question him, I was too scared? Or hurt, or confused... He then got back in touch with me to say that he was definitely coming home for Christmas. I, at this point, told him that if he doesn't, then there is no point continuing this as its not healthy. He kept messaging me a lot after this making a definite plan.
We booked a hotel, etc etc. He THEN messaged me a week before he was due to fly home saying he had strep throat and wouldn't fly. I exploded, I basically asked him why he was doing this to me and he just got defensive and gave really cold answers, so I blocked him on all social media.
It has now been three months since we spoke at all and I am in SO much pain. I don't understand why, I cannot stop crying about it and I've been like this for weeks. I get that I may have projected and dreamed a lot about this potential relationship that never left the ground, but why is it so painful. I feel like I don't know what the point of my heart is, I cry at work. Is there something wrong with me? Why did he do this to me?