He fell head over heels for her.
他深深爱上了她。
7. to be lovey-dovey 卿卿我我
= for a couple to show everyone how much they are in love
They're so lovey-dovey, always whispering to each other and looking into each other's eyes.
他们两个老是卿卿我我的，时而窃窃私语，时而深情对视。
8. to have eyes only for 只钟情于某人
= to be attracted to one person only
He's dropped all his old friends, now that he has eyes only for Susie.
他抛弃了所有的老朋友，因为如今他眼里中有苏西。
9. to be smitten by someone 爱上某人
= to be in love with someone
I first met him at a party and from that evening on, I was smitten.
第一次见到他是在一次派对上，从那夜起我就迷上他了。
10. to be the love of someone's life 为某人所爱
= to be loved by a person
He has always been the love of her life.
他是她一生所爱。