I hear you Uwe. but he indicated that he told her repeatedly that he was leaving for Europe. If she actually cared about him, she should have paid SOME level of attention. And they were not married - their level of involvement is not specified, but I don't see that he did anything that was negligent or violated any agreements with her. He probably should have gotten some acknowledgment from her that she actually HEARD what he was saying, but if she didn't care enough to listen, she's at fault too.
I guess I'm the opposite from some others here. I've been married to a wonderful lady for 25 years come November - we dated for four years before getting married - and in all that time, we've never had a fight. We're both the type of people who dislike fighting, and due to our personalities and academic training, when we have a difference of opinion, we just talk about it. That's right for her and me - but I recognize, not for everyone. (No wonder I'm an academic at a university.)
I wouldn't touch a lady like the one in the story with a 10-foot pole. I dated a few, and every one of them was more trouble and higher maintenance than I wanted to be involved with.