青梅竹马的英文：
[Literal Meaning]
green/plum/bamboo/horse
green plums and a bamboo stick used as a toy horse

[解释]
小男孩、小女孩天真地玩游戏。比喻男女年幼时很亲密的关系。

[Explanation]
(of young boys and girls) to play games together innocently when they were young and become a good couple after they grow up; a pure and deep love starting from childhood

[例子]
张华和李明从小青梅竹马，结了婚以后感情好得不得了。

[Example]
Zhang Hua and Li Ming have a pure and deep love starting from childhood and are in a very good relationship after they married.

As he had grown from boy to man, he had grown in love with his old playmate
随着他从孩子长大成人，他也把爱情给予了童年时代青梅竹马的同伴。