You cannot legally prosecute someone who is cheated on their relationship, but if you use your relationship to defraud others of their money, you can prosecute.
The "Criminal Law of the People's Republic of China" stipulates:
Article 266: Whoever defrauds public or private property, if the amount is relatively large, shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or surveillance, and shall also or a fine alone; if the amount is huge or there are other serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years, and shall also be fined;
If the amount is particularly huge or there are other particularly serious circumstances, he shall be sentenced to ten years If the amount is huge or there are other particularly serious circumstances, the offender shall be sentenced to fixed-term imprisonment of not less than 10 years or to life imprisonment and shall also be fined or have property confiscated. If this law provides otherwise, the provisions shall prevail.
Extended information
The "Interpretation of the Supreme People's Procuratorate on Several Issues Concerning the Specific Application of Laws in Handling Criminal Cases of Fraud" stipulates:
Article 5: Attempted fraud shall be punished by If a huge amount of property is the target of fraud, or there are other serious circumstances, he will be convicted and punished.
Using telecommunications technology means such as sending text messages, making phone calls, and using the Internet to defraud an unspecified majority of people. The amount of the fraud is difficult to prove, but if one of the following circumstances occurs, it shall be deemed as Article 260 of the Criminal Law. "Other serious circumstances" stipulated in Article 6 shall be convicted and punished as fraud (attempted):
Article 5?
(1) Sending more than 5,000 pieces of fraudulent information;
(2) Producing and disseminating more than 3,000 pieces of fraudulent information;
(3) Producing and disseminating more than 4,000 pieces of fraudulent information.
(2) Making fraudulent calls more than 500 times;?
(3) The fraud methods are egregious and the harm is serious.
Whoever commits the acts stipulated in the preceding paragraph and the quantity reaches more than ten times the standards specified in items (1) and (2) of the preceding paragraph, or the fraud means are particularly egregious and the harm is particularly serious, shall be deemed to be a person under Article 1 of the Criminal Law. "Other particularly serious circumstances" stipulated in Article 266 will be convicted and punished as fraud (attempted).
Xiuzhou District Public Security Bureau--Chinese People's Liberation Army, National Criminal Law