Valentine's Day: 情人节
Happy Valentine's: 情人节快乐!
暗恋要用"crush":
To have a crush on someone: 暗恋
怎么用:
I'm crushing on someone: 我暗恋某个人
Someone is my crush: 某人是我的暗恋对象
Declare your feelings:表白
To have feelings for someone: 对某人有感觉
To like someone: 喜欢某人
To like like someone: 那种喜欢的喜欢
(I like like him. 我是真的喜欢他。)
To adore someone: 仰慕、倾慕某人
To have it bad for someone/I've got it bad for someone: 特别渴望地爱着某人
To be crazy about someone: 爱疯了某人
To fall for someone: 坠入爱河
(这个比fall in love with someone更口语)
Lovestruck: 触电般的爱
Lovesick: 相思成灾