Western World
In the United States, United Kingdom and Canada, scandals, particularly political ones, are often referred to by adding the suffix "-gate" to a word connected with the events, recalling the Watergate scandal, such as "Nannygate".
If you don't understand what she is saying just search for Gillian Chung's apology video on her role in the Edison Chen scandal. Basically, both are saying the same thing, that they were young and naive, and things happened many years ago (3-5 years).
Scandal
A scandal is a widely publicized allegation or set of allegations that damages the reputation of an institution, individual or creed. A scandal may be based on true or false allegations or a mixture of both.
From the Greek σκάνδαλον, a trap or stumbling-block. The metaphor is that wrong conduct can impede or "trip" people's trust or faith.
Some scandals are broken by whistleblowers who reveal wrongdoing within organizations or groups, such as Deep Throat (William Mark Felt) during the 1970s Watergate scandal. Sometimes an attempt to cover up a possible scandal ignites a greater scandal when the cover-up fails.
