lovesick
adjective /ˈlʌvsɪk/
/ˈlʌvsɪk/
- unable to think clearly or behave in a sensible way because you are in love with somebody, especially somebody who is not in love with you
- He’s been wandering around all week like a lovesick teenager.
Oxford Collocations DictionaryLovesick is used with these nouns:- teenager