Younger generations are having their first sexual experiences earlier in life. For those born after 1995, the average age at which people have sex for the first time is 17.7, said a 2015 China Love and Marriage Survey.

The 2015 China Love and Marriage Survey, released on Jan. 10 by the Peking University Social Survey Research Center and baihe.com, a leading Chinese dating website, also concluded that couples in China are faster moving in terms of divorce, with the fabled "seven-year itch" striking most married couples in year five.

In all, 80,000 subjects were polled, covering all of China's municipalities, provinces, and autonomous regions, as well as Hong Kong, Macau and Taiwan.

Data in the survey shows that more than half of people throughout China (51.1 percent) had been in love before the age of 18.

Children of divorced or separated parents experienced love earlier, especially if their parents did not remarry. This category experienced first love on average at 15.2 years old. Trends differ with age: those born before 1970 experienced first love later, around 19.2 years old, while those who were born after 1995 first experienced it at around 12.7 years.

The report also revealed that younger generations are having their first sexual experiences earlier in life. For those born after 1995, the average age at which people have sex for the first time is 17.7. This is in contrast to those born in 1980s, who had their first sexual experiences on average at over 22 years old.

The “seven-year itch” has shortened to become the “five-year itch" in China, as the survey shows that within three to five years of marriage, the couple's happiness tends to reach its lowest value for both partners.

Out of all those surveyed who had been married for three to five years, 11.1 percent of respondents said that, if given a chance to do it all over, they would not choose to marry the same person, while 8.9 percent said they would not get married at all.