Does he love me?

My ex and I lived together in New York for a year. We fought a lot but never truly splitted up. He treated me like a princess and we loved each other very much. However, I decided to break up with him when I moved back to Taiwan. It has been six months....

Within this period, I've been dating a guy and he has been dating a woman too. However, few weeks ago, we got in tough again and broke up with our partners. We started to talking about meeting up again in New York shortly. I planned to visit him in March but he told me he'll be really busy for work at that time. He hopes that I can hold until June or July. I can't wait though. We've been fighting again because he doesn't welcome my visiting.
I try to understand his situation but I can't wait anymore. Sometimes he missed my calls and sometimes he's too busy to talk to me on the phone. He dropped the things we did to maintain our relationship. He doesn't call regularly anymore. He doesn't put me as priority. He told me that he doesn't want me to fly back to New York because I will interfere his work and his peaceful life.
What can I do? I miss him so much and can't hold this anymore...
Also, I can't understand, if he loves me, why doesn't he want to see me as soon as possible? Why did he tell me that he wasn't happy when I told him I'm visiting soon?

wow I dont know if its the sad song that I have playing in the backround or what but that sound sad, the truth is that (well what I feel) is that you left him and he has moved on and your correct your not at the top of the list anymore, you cant expect that he would have you there anymore, sorry if thats is painful to hear, I see that your new so am I, if you ever want to talk use that fun mail thing...hsp and yes I am sure there is still love there, but that feeling sticks around even if you are with a new person, but to be fair to your new girl or guy we must push that feeling away and move one...you know what I am talking about, you cant hold that pain forever, when its time to move on the heart tells you. good luck if I never talk to you again

You broke his trust! you broke up with him so he is going to find it hard to trust you again not to leave so he doesnt want to get to close. If you want to win him back you have to be patient, go to see him when he is ok with it becos if you go and your not wanted there, he will only become annoyed and you'll push him further away! be there for him when he needs but ont be over obsessive.