Welppppp idk if this would help you but these are my 5 stars & 5+ stars. You can ignore those who have a "cry" tag since you want all happy endings
http://www.mangago.me/people/tag/275673/%E2%98%85%E2%98%85%E2%98%85%E2%98%85%E2%98%85/
http://www.mangago.me/people/tag/275673/%E2%98%85%E2%98%85%E2%98%85%E2%98%85%E2%98%85%2B/
http://www.mangago.me/home/mangalist/124018/ heres a list i made.
Here is my list of my favorite couples. Most are completed. Let me know what you think
http://www.mangago.me/home/mangalist/120951/
Mind sharing me your albums/tags of completed mangas with nice plots? I want some chemistry, maybe some angst but happy endings, something that you really enjoyed!
Please spare me from the ones that are just focused on the action( plain smut), I want some good love chemistry!