I generally don't watch Shounen-Ai. The one I watched the most episodes before eventually dropping is Uraboku. In this show, since the main male character is the re-incarnation of the other main character's dead girlfriend, I can sort of understand why he might still have strong feelings for him. The other thing it has going for it is a good fantasy setting and artwork. In general, I can watch Shounen-Ai as long as I can "look past" it at other aspects of the show, but once things get too heated, I bail.