I want a BL that’s like. Straight guy turns gay! Omg he’s now a bottom 😱

wait i want this too, keep me updated gang

Theory of Love is a good one!
There are tons tho. Reddit will be your best friend

TharnType too!

I think this one fits the bill: https://www.mangago.zone/read-manga/sonna_ni_iu_nara_daiteyaru/

https://www.mangago.zone/read-manga/miwaku_shikake_amai_wana/

You can search more on MU by choosing such tags.