crush on (someone)
1. noun A romantic infatuation with someone, especially unbeknownst to that person. Oh man, she's had a crush on Tommy for years!
2. verb, slang To have a romantic infatuation with someone, especially unbeknownst to that person. Oh man, she's been crushing on Tommy for years!
*crush on someone
infatuation with someone. (*Typically: get ~; have ~.) Mary thinks she's getting a crush on Bill. Sally says she'll never have a crush on anyone again.