ex boyfriend

So my ex boyfriend had a new girlfirend but never metioned it to me. We had a very long relationship. He was always keeping in touch with me after the break up and sending me messages, even if i still had feelings for him i never sent him anything first. Its been long since we broke up and it was my choice. But as we kept in contact , i still harbored feelings for him and started to believe that at some point we can be together again (i didnt move to next relationship even if its been so long). The reason that i broke up with him was that the relationship really was going bad at that point and we surely needed a break (i dont want to analyze). I was always asking him what he is doing when he was contacting me and he was always pretending that he had no life and only work and stay home. Until i asked directly one day and out of nowhere he said that yes, he has a new relationship. Ofcourse i was angry and told him this is the end of our communication and i dont want him to bother me anymore. I called him liar and he still insisted that he never lied to me (how can u have a new relationship when u pretend that u are home all day or at work) He asked me to not block him yet and asked me to wait for him to come (we live in different places now) so we can talk and so he can say the things he want about this. Now i dont know what to do. I want to disappear after what happened , especially cos i feel like i was mocked. But on the other hand i want to make a last talk with him but i dont even know exactly when he can come (it can be months). I really need to let go finally and all this waiting will hold me back. I want to see different opinions about why he lied to me and hide such an important thing and if it is better to wait and talk with him or end it now.