This is based on a real story and the only one I know http://www.mangago.zone/read-manga/until_i_meet_my_husband/ but I’d say mostly there are more mangas that are realistic compared to manhwa/huas
For BL:
http://www.mangago.zone/read-manga/torokeru_tamago_to_bed_no_naka_de/ - established relationship where one partner wants to go one step further.
http://www.mangago.zone/read-manga/tonari_ni/ - pretty relatable that doesn't go dramatic route.
Oh, I do remember a manhwa that does seem pretty grounded (it even has an asexual side character).
https://www.tappytoon.com/en/comics/all-about-lust
I am looking for manhwa/hua/gas with a more realistic approach to LGBTQ+ issues. It seems many BL manhwas choose not to deal with issues such as coming out, self-acceptance, internalized homophobia etc. I think many characters come to terms with their same sex attraction all so suddenly and comfortably which is pretty much not in line with the realities of contemporary Korean/Chinese/Japanese societies. Any BL or GL works where the creator follows a more realistic approach?
I am not looking for something tragic, melodramatic or sensational, just something that feels natural. Doesn't matter whether it's a happy or sad story. Would prefer manhwa or manhua over manga unless you got a really really good manga.
Cheers <3