can you guys recommend me some straight x gay bl mangas pls ヾ(☆▽☆)

I know you probably mean a guy who thought he was straight until he meets the gay guy but the wording of the question has thrown me off so much. Like an actually straight guy won't be attracted to a man...

Yoidore Koi o Sezu
Bakashite Damashite

Faded first lov3

Here list -
https://www.mangago.zone/home/mangalist/2005955/