"I fell in love with a K-pop song, "An Old Love(옛사랑)," by Yoon Min-soo. I've ever listened to it before because my friend loved it."
The above is indeed very strange and wrong.
I have ever XX >not such construction.
Let me try to construct the sentence above better:
"I fell in love with a K-pop song, "An Old Love(옛사랑)" by Yoon Min-soo,and I've never listened to it before until my friend told me he loved it
"I fell in love with a K-pop song, "An Old Love(옛사랑)" by Yoon Min-soo,and if I were to ever listened to it, it would be because my friend loved it.
"have p.p." > what do you mean?