Okay, I'm up, I'm well rested, I stand by my decision.
Also, for anyone worried about doing a lot of brainwashing, I used that word because I wanted to keep the spell descriptions short and sweet, not because it was necessarily accurate. And I said brainwashing doesn't count because I didn't want people thinking your spell would be hit by the debuff.
To clear things up, the spell you get merely enhances your beauty. Basically you get bishy sparkles. Your degree of success determines how effective this is. Within 10 of the DC, your target gets a penalty to attacking you. 10 over the DC, your target is stunned for a round. 20 over the DC, their next attack switches to someone else attacking you. 30 over the DC and higher, they start defending you for the rest of combat because they can't bear to see someone so beautiful tarnished at all.
If you guys do go down the evil route, you can eventually get actual brainwashing but if you genuinely want to romance magical girls, you don't have to use it on them.