And it's normal for you to have this idea. Everyone wants his love to be pure and flawless, and everyone wants his lover to belong to him. We are all selfish about love. We are eager to give ourselves all the feelings of each other, and we can't easily accept those practical problems. If the other party has children, it will inevitably be related to the ex. If it is serious, it will also affect his future marriage. All these must be considered.
If you know this from the beginning, you just want to fall in love with your current job and don't want to get married, but now you start talking about marriage, these practical problems have to be the standard of measurement. You care that the other person is married, you care that the other person has children, and you care about the other person's past and past. If you are hesitant and uneasy before marriage when you know what happened to the other person, then you should also think about whether you can be honest with your current position and whether you can stand in the same boat through thick and thin. Besides, if you really love him, why care about his past? Maybe in this relationship, you don't love him as much as you think.