Oh right, forgot he could've asked for ANYTHING so the "cheating" subplot I just mentioned don't need to happen and he'd just fuck her straight away right after any requests. But then he'd be miserable to realize that no matter how hard or often he tries to fuck her, she'll always be pining for his brother. Similar to the guy in All You Can Fuck For A Price by Bambi, hopelessly fucking the girl knowing he can't change her, in the end, everyone's hurt.