My reasons are as follows. First, since the groom has his own new family, he should not have anything to do with his ex-girlfriend. Moreover, in this case of marriage, both the groom's family and the bride's family are present. The groom's behavior shows his firm attitude and position, gives his wife enough sense of security, and gives his parents-in-law a satisfactory answer, so that they can safely give their daughter to the groom and believe that the groom can give her happiness.

The second point: it is very irrational for the groom's ex-girlfriend to wear a wedding dress on the groom's big day, and it will be spurned. Life is not a movie. Now that we have broken up peacefully with the groom, when the groom gets married, as male and female friends who were together before, we should get together and look at it with a blessing attitude, not with such a distorted, vengeful and jealous attitude. Besides, this kind of behavior is also disrespectful to other people's brides, ruining other people's weddings, and everyone can feel better. Let's analyze why it is right for the groom to react like this.

First of all, breaking up with another woman is against the moral bottom line. Either don't get married, treat your wife well when you get married, and don't do anything wrong. As a dutiful son and a qualified husband, we should not break off relations with other women except our wives, because it will not only hurt our wives, but also hurt both parents, which will make both parents lose face and we will be spurned. Moreover, as the pillar of a family, we must set a correct example for our children, so don't do anything shameless, let children feel ashamed when they hear about themselves, and don't act as a negative example in their education.

Secondly, I think the groom pushed his ex-girlfriend away at the first time. Although the way may be too rude, this response is very firm and worthy of recognition. Because the first groom pushes away his ex-girlfriend to show that he doesn't want to be unfaithful to his marriage, but wants to grow old with his wife, which is what a qualified husband should do.

I hope my answer can bring some help to everyone.