Only have eyes for someone:
To be interested in or attracted to only one person.
“Only have eyes for someone” 的意思是 “只关注某人，只被某人吸引”。人们也用它来表达 “喜欢或爱着某人，对其他人不感兴趣”。
例句
I told my boyfriend I only had eyes for him.
我告诉我男朋友，我眼里只有他。
I’m in love! She said she only has eyes for me.
我谈恋爱了！她说她只爱我一个人。
I can tell he only has eyes for you.
看得出他眼里只有你。
