What does it mean to ask for a red line in fortune telling?

Two red lines in marriage? My girlfriend told me that there are two red lines between us. Why are there two red lines?

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Some major changes, especially personnel changes, will be gradually determined. Whether it is a disaster or a blessing depends entirely on your own thoughts. Asking other people's opinions can make you feel more stable, but you have to understand that it is you who make the final decision. If you have a partner, you may face the situation of separation, but the distance can be made up in other ways.