This is the 7175th most frequent Korean word.
좋아했고
"Liked" or "had liked."
In this context, '좋아했고' ('liked, and') indicates a past appreciation or enjoyment of the mentioned item followed by a connected action.
그때 나는 그 영화를 정말 좋아했고 계속 생각했어요.
At that time, I really liked the movie and kept thinking about it.
Here, '좋아했고' ('liked, and') conveys a past friendly feeling towards the people in conjunction with subsequent interaction.
학교에서 나는 새로운 친구를 좋아했고 많이 대화했어요.
At school, I liked my new friends and talked with them a lot.
'좋아했고' ('liked, and') in this sentence expresses a continuous enjoyment of music linked to a regular activity.