Happy Together (bunny and min are literally the most domestic and sweetest couple on this site, yearning is minimal tho they're more like an old married couple and there's a lot of fluff and an intriguing story)
To you at dawn (they're so sweet and gentle with each other and they both are insane yearners but the bottom seems to be a little possessive of his top lol, it's a recent webtoon with only 10 chapters so far)

Got any nice romance webtoons (yuri yaoi or straight idk what that category is called help) similar to Define the Relationship or Blossoms of the White Night
(Lots of yearning and proper communication ykykyk and fluff the whole package)