Those are fake friends.

那些都是假朋友。

youdao

Fake friends are worse than the evil enemies.

伪装的朋友要比凶恶的敌人更坏。

youdao

True friends want you to be happy while fake friends want to see you miserable.

真正的朋友希望你幸福，而虚假的朋友希望你生活悲惨。

youdao

Most Facebook members comply voluntarily because they want to deal with real friends, not fake ones.

ECONOMIST: Digital identities: Trolling for your soul | The

Fake Rick and I had several mutual friends, including a Wall Street Journal reporter, a savvy lawyer and a public relations executive.

FORBES: Social Media

In EVE Online, for instance, one player, Nightfreeze, allegedly cheated his in-game friends and rivals out of hundreds of millions of in-game "credits" using nothing but fake accounts, a public library's telephone, some help from friends, and his wits.

FORBES: Magazine Article