Board Thread:General Discussion/@comment-33883848-20190404103106/@comment-33883848-20190407090754

User1204 wrote: They aren't gaining LOVE. Frisk, your vessel, is gaining LOVE (when Frisk makes creepy faces, or when they step on monster kid)

They actually both do,Chara says that both of them became emotionaly stronger together and its proven by Chara's name present on their stats that their lv increases