Make the Exorcist Fall in Love is a Manga/Manhwa/Manhua in english language, ROMANCE series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

As the strongest exorcist, a boy chosen by God was engaged in mortal combat with the Demon Kings. Although he bears the fate of humanity on his shoulders, he actually wants to make sweets peacefully. One day, he meets a girl... This is a story of love and hope growing in the midst of a holy war.