Are there any well-known gossip in the entertainment circle?

What are the well-known gossip in the entertainment circle?

For example, many stars already have girlfriends, but they dare not make it public. Some people even get married in secret, but no one knows.

Many people say that this star is with that star. Actually, not necessarily. Many of them are hype from both sides, which is a propaganda means to increase the amount of topics.