liànàinǎo Meaning:

“恋爱” means “in love,” and “脑” means “brain.” Coined by Chinese netizens, this term refers to a state of mind where someone puts all his or her time and energy into the one they love once they think they have found their soulmate. Such a person would frequently think of and talk about their love, whether or not others are interested in hearing their stories.

Example:

A: 丽丽怎么交了男朋友就像变了个人一样，以前的理想都忘了，说什么最大的愿望就是以后能和爱人平平淡淡过一辈子。

Lìlì zěnme jiāo le nánpéngyǒu jiùxiàng biàn le gè rén yīyàng，yǐqián de lǐxiǎng dōu wàng le，shuō shénme zuì dà de yuànwàng jiùshì yǐhòu néng hé àirén píngpíng dàndàn guò yībèizi。

Li Li has not been quite herself since she fell in love. She has forgotten all her life goals and says her biggest wish is to live a quiet life with her significant other.

B: 她这是恋爱脑，可能过了热恋期就会好一点。

Tā zhè shì liànàinǎo，kěnéng guò le rèliàn qī jiùhuì hǎo yīdiǎn。

She has a brain in love. Perhaps she will get back to her senses after that honeymoon period expires.