catch feelings

Verb

colloquial intransitive

(colloquial, intransitive, or transitive with for) To suddenly begin to feel romantic attraction (towards) (someone).

Japanese Meaning

突然に（ある人に対して）恋愛感情を持ち始める / 予想外に恋に落ちること / ふとした瞬間に誰かに魅力を感じること

I never expected to catch feelings for my neighbor, but now I can't stop thinking about her.

隣人に恋心を抱くとは思っていなかったのに、今では彼女のことを考えるのを止められない。

Sense（1）

(colloquial, intransitive, or transitive with for) To suddenly begin to feel romantic attraction (towards) (someone).