The InstaHate Genesis would have for Gong-gil would be the stuff of nightmares. DDD: Especially if Genesis saw how much attention Angeal was giving Gong-gil. Oh, god, it would be the most awful thing ever, especially because Gong-gil has, like, ZERO self-preservation instincts or defense mechanisms other than 'curl up and shake' (which was why a scene in the movie were Nok-su is trying to strip Gong-gil in a rage is so DDDD: --Gong-gil is way bigger than her, but it's like watching a tiger attacking a kitten or something). Genesis' passive-aggressive frenemy thing with Sephiroth would be forgotten in a heartbeat at this prettier-than-him guy who gets massive attention that should rightfully be Gen's from everyone.
(Seph would so not understand any of this but would be glad it meant Genesis stopped spouting Loveless at him and going on about heroes, and would enjoy it while it lasted.)