You don’t think it would ever happen—it’s like something from a rom com and not from real life—but it can happen. Your parents can disapprove of the man who proposes to you. Perhaps he specifically asks them for your hand in marriage, and they say no, or he takes the more modern approach of asking you without asking them, but they’re still pretty vocal about disapproving. It could be for religious purposes. It could be because they always just had someone else in mind for you. It could be because they’re right that he is wrong for you. It certainly leaves the two of you in an awkward position. So much for openly discussing wedding plans with your parents or having them at your engagement party. They don’t want any of this to even happen! So, when he doesn’t get your parents’ blessing: then what?
Is it because he didn’t ask?
Perhaps this is all because he did not ask them in the first place. Maybe your parents would have happily given their blessing had he asked for it. They’re traditionalists, and were insulted to discover that he just asked you without talking to them first. Now, they don’t approve of him.