<human>: Can you give me a shortened version of the text?

Dear Redditers, I (F/36) have been dating this guy (M/40) for 4 months, we had been moving slowly seen as we have both had our share of failed relationships. But sure enough we were getting more serious, talking about meeting our kids, planning things a bit farther ahead in time (talking about things we would wish to do together in the future). He went abroad for his work and we had several really nice chats while he was there. Then all of a sudden I did not hear from him anymore. So I tried contacting him and as it turned out he already was back in our home town. I tried setting a meeting, but he couldn't at the dates I mentioned. So I asked him to let me know when he had the time for a meet-up. After that he never contacted me again. So yes, I do get the message, he does not want to see me again. But please do tell me, why does a man do this? Why does he just grow silent and not just tell me he does not want to see me again? It just broke my heart to be dumped this way and I could do with some answers, but do understand I will not get them from him.
<bot>: So: Dear men of Reddit, can you help get me closure and understand why a man whom you are dating for several months suddenly grows cold and just never contacts you again?