Quote from jelzin89
more or less all shounen manga with romance tag out there?
Bwahahahah, that made me laugh. Thanks.
As to the original question, two that come to mind easily are Love Hina and Love Collage... two veritable classics.
In a world where troubled young hearts are besieged by evil spirits, only one can wield love as a weapon: the God of Conquests, Keima Katsuragi.