She was looking for a "forever" and he wanted a "moment".
她在求一个“永远”，他却只要一个“瞬间”。
知识点：moment的相关短语
moment n. 重要，契机；瞬间；重要时刻；指定时刻
1. at any moment 随时
whenever He said he would arrive today, and I expect him at any moment. 他说他今天到达,所以我想他随时都可能到。
2. at the moment 此刻,现在,目前
The police arrived right at the moment of the explosion. 警察就在爆炸的那个时候赶到了。
3. for a moment 片刻,一会儿
Could I borrow your English dictionary for a moment, please? 我能否借一下你的英语词典?
4. in a moment 一会儿,立刻,马上
I'll come in a moment. 我一会儿就来。
5. not〔never〕 for a moment 一点也不,绝不
I never believe what he said for a moment. 我一点儿也不相信他说的。