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
i've only read until i met my husband, and was wondering if there were any others.