문제지문은 이렇습니다
Bunam was a student of Mokdong middle school one year ago. One day, a girl called Minsun moved from another school. When he saw her first. he started to love her. And Bunam still loves her now.

이것을 love와 since를 사용하여 현재완료시제로 바꾸는 건데 답은
Bunam has loved MInsun since last year이라고 되어있는데
since뒷부분을
since he saw her first라고 해도 맞지 않나요?
영어 고수님들의 꼼꼼하고 자세한 설명과 답 부탁드립니다~!!