Here are Korean expressions for "have a crush on someone" and other related ones. - 그에게 반하다: Have a crush on him - most common and traditional. - 그에게 꽂히다: Have a crush on him ("He's stuck on my heart") - newer, slangy. - 그를 좋아하다/사랑하다: Like/Love him. - 그에게 호감을 가지다: Have a soft spot [favorable feelings] in one's heart for him. - 그에게 (마음이) 이끌리다: Be attracted to him. - 그에게 홀리다/혹하다: Be (temporarily) infatuated with him (usually negative). These words usually describe one's sentiment to a third person, just like "have a crush". These phrases can be used in any situation, but they are just plain descriptions with no romantic feel.

you can say 나는 그녀에게 호감을 가지고 있다:i have a crush on her Or 나는 그녀를 좋아해요/사랑해요:I like/love that girl.