Unforgettable first love (Minnan dialect) is there a man to sing?

In the past, songs in Taiwan Province Province, whether in Mandarin or Taiwanese, could be included in their albums by both men and women as long as they were pleasant to hear. As you said, "Unforgettable First Lover", in my impression, more than four male artists sang it and included it in the album.

Green hills

Hill

Tian Yu

Yu-Ching Fei

Luo Shifeng