lover

LOVER noun

uk/ˈlʌvər/ us
B1 [ C ] If two people are lover s, they have a sexual relationship but they are not married.

любовник
She had a string of lover s before her marriage finally broke up. a book/cat/dog, etc lover
B1 someone who is very interested in books/cats/dogs, etc

любитель книг/кошек/собак и т. д.
She's a real cat lover .