any "BL" (wouldn't call it that, but idk what else to) mangas based off a true story?

This is not based off a true story (I'm sorry!) But it has the same vibe of Until I Met My Husband:

http://www.mangago.zone/read-manga/life_senjou_no_bokura/
^^ prepare tissues

http://www.mangago.zone/read-manga/torokeru_tamago_to_bed_no_naka_de/
^^ Gay couple with a lil homophobia

For more established and healthy relationships check this list that I made: http://www.mangago.zone/home/mangalist/812238/

http://www.mangago.zone/read-manga/tatoeba_konna_koi_no_hanashi/
This one! I really enjoyed it :D

thank you both!