Synonyms for Seraphic (same or very similar meaning)
WordNet sense 1 (of or relating to an angel of the first order):
seraphicalWordNet sense 2 (having a sweet nature befitting an angel or cherub):
angelic, angelical, cherubic, sweetWordNet sense 3 (having characteristics that attract love or affection):
lovable, loveableFrom the ODE community, based on WordNetadd/edit