We also hear the expression love-rat used quite often in popular newspapers.

爱情老鼠这个表达也经常出现在那些通俗小报上。

youdao

"Taking a jibe at Cheryl's love-rat hubby, England defender Ashley Cole, Messi said his country had the" prettiest "players."

谢丽尔的丈夫是英格兰国家队后卫阿什利·科尔，梅西嘲笑科尔不懂珍惜自己的老婆，并称阿根廷球员是世界上“最英俊”的。

youdao

Louis: I do love the macadamia. Sorry, rat pack, this cat's with me.

路易斯：我喜欢那些坚果。不好意思，老鼠们，这只猫和我是一伙的。

youdao

Its owner Michael Lee bought the house from the estate of late comedian Buddy Hackett, who informally renamed it the Love Shack for all the Rat Pack-filled parties he held.

WSJ: A House by Any Other Name