Last year my 25-year-old daughter became engaged to a man five years her senior after just 6 months of knowing each other. They planned to get married in 2015. They started living together this July at about the same time as my daughter started her first job as a teacher. She loves her job and is dedicated and conscientious. As we predicted, she hasn't had the time to dedicate to looking at wedding venues or anything wedding related, so she told him she wasn't ready to get married. Last week she arrived on our doorstep with her suitcase saying they were splitting up as she couldn't give him a definite timescale for their marriage. To put it bluntly, he appears to want be married more than he wants to be with her. I feel so baffled by his behaviour, and it seems so strange that we won't be seeing him again after making him so welcome in our home. It's his birthday soon and I feel inclined to say something in a card to him. Would that be a mistake?