学习谈恋爱用英语可以说是 "learning about dating and relationships"。

这个短语的来源可以追溯到英语中的两个单词："learning" 和 "dating and relationships"。"Learning" 是动词，指的是学习、获得知识或技能的过程。"Dating and relationships" 则是名词短语，指的是恋爱、交往和人际关系。

下面是一些英文例句及其中文翻译：

"I'm really interested in learning about dating and relationships."
（我对学习谈恋爱很感兴趣。）
"I'm taking a class on dating and relationships to improve my communication skills."
（我在参加一门关于谈恋爱的课，以提升我的沟通技巧。）
"I've been reading books and watching videos on dating and relationships to better understand how to navigate them."
（我一直在读书和观看关于谈恋爱的视频，以更好地了解如何应对它们。）