(Oki-there is a simple solution here-curse her to be unable to love anyone-cuz like-think about it. If Eros tries to go any further, he's f*cked. And if she manages to find a wealthy husband, ain't no shot in hell she's gonna love him. So they're both doomed either way.)
(Eros IS curse breaker-it isn't-IMPOSSIBLE for her to fall in love with him-I don't think Aphrodite can block off a heart completely, but he can't use his arrows, that's just gonna kill her, and it's gonna be a lot harder-And this will raise the problem of-how does he get her out of the castle? Cuz like-if she go marry some rich asshole-he's not gonna be able to see her and that curse ain't gonna break-)