YOU SAID:
I caught feelings for someone who is in a relationship
INTO JAPANESE
恋愛関係にある人への想いを掴んだ
BACK INTO ENGLISH
I got a feeling for someone who is in a romantic relationship
INTO JAPANESE
恋愛関係にある人に感じました
BACK INTO ENGLISH
I felt like someone in a romantic relationship
INTO JAPANESE
私はロマンチックな関係にある誰かのように感じました
BACK INTO ENGLISH
I felt like someone in a romantic relationship
That didn't even make that much sense in English.