表白在英语中可以用 "confess one's feelings" 或 "declare one's love" 来表达。这两种表达的来源都是源自于拉丁文。"Confess" 来自于拉丁文的 "confessus"，意思是 "承认，坦白"；而 "declare" 来自于拉丁文的 "declarare"，意思是 "宣布，声明"。

例句：

He finally confessed his love to her after months of hesitation. 他在犹豫了数月后，终于向她表白了他的爱。

She declared her love for him in front of everyone at their graduation ceremony. 她在毕业典礼上当着所有人的面向他表白了她的爱。