love-struck
adjective uk/lʌv/ us/lʌv/
热恋的;被爱情冲昏头脑的
so in love with someone that it is difficult to behave as usual or even think of anything else except the person you love
Look at me, I'm behaving like a love-struck teenager! 瞧瞧我的样子，简直就像个热恋中的孩子！