puppy love

軽蔑的くだけた表現不可算名詞

(informal, derogatory) A childish or youthful infatuation with another person.

日本語の意味

子供じみた、未熟な恋愛（軽視されるような一時的な情熱や幼い感情の恋）

She dismissed their fleeting puppy love as a phase and encouraged them to focus on their studies.

彼女は彼らの束の間の幼稚な恋を一時的なものだと切り捨て、勉強に集中するよう勧めた。

意味（1）

(informal, derogatory) A childish or youthful infatuation with another person.

They're only teenagers; it's hard to take their puppy love seriously.