I had been seeing him since February and when we were together it was great! But when we weren't, he would go through waves of talking every day to then not talking for a few days. I thought calls would be better, so at first we called often. Then he started making excuses for not calling, texting.
A month ago, he cancelled a date very last minute and I told him that wasn't going to work for me. He was apologetic and asked to meet up to "talk". During that talk, I was expecting to end it and say oir final goodbyes. He told me everything that I wanted to hear basically. How he can be better and make this work, he wants it to work. All the things we could do together. He acknowledged his mistake and seemed remorseful. Things improved for a week. The next date scheduled I was unwell and let him know in advance. I offered different days that week but he declined. He proceeds to reschedule and we organise a date the following week. It was all planned out. The morning of, he tells me he's sick and will try to make it (however he had stories where he was out the next day so clearly not sick). Closer to the time I call him to confirm. He texts me instead and tells me let's reschedule to next week. I check in with him and no answer.
That was the last I heard from him.
Tldr;
Why do people ghost someone they were seeing, after giving false hope about how much they want this to work and then saying let's reschedule and never actually following through OR even saying sorry it's not going to work out?