I read the 7 chapters up before knowing that this was made by the artist for THAT particular series. I'm just hoping that, since it was the artist and NOT the author, this person might be interested in taking it down a different path. Before reading the spoilers, I was hoping that someone would sit down and ask her if she'd considered her boyfriend's feelings. Like, OK, you love how caring and devoted he is to you, and because he's so caring and devoted you want him to let you sleep with other men to fulfill your fetish? One look makes it clear that's not what he's into, so which do you want? Do you want a man who will love you so much he'll gladly help you do things he hates knowing you do? Or do you want to love him enough to do what he loves even if it doesn't always turn you on? That's something people often don't seem to get: it's not just about "compatibility". In real life, you're never going to find someone who's a perfect match, whether we're talking about matching what each can give sexually to what each wants, or what each wants and supports in terms of work, or emotionally, or anything. What really matters isn't whether you're "compatible". What matters is whether you care enough about your partner to try and give them what pleases them and try to understand the good parts of what they have to offer.
For instance, if the truth is that the girl doesn't just have a thing for screwing other men but just wants the guy to treat her a way he doesn't, maybe they should both just talk about what they like and want. And not in the sense of "What you do makes me dry/makes me limp", but rather "this is what really turns me on, what turns you on?" In other words, full acceptance and reassurance that no, you are not at fault for me, and I'm not at fault for you, and just because we don't perfectly match up here doesn't mean we can't love each other and find fulfillment in one another's arms. If he likes gentle lovey-dovey stuff and she prefers something rougher, maybe they can take turns. Some days she can play the proper princess melting into her beloved's arms, and some days he can play the horny bandit having some fun with the princess before tossing her aside. If they really love each other, and give their all to make it clear to each other just how much they love doing these things, they should be able to sense that passion, and that in and of itself should at least give them something. If you can't feel anything from seeing your beloved overwhelmed with passion, can't find it in you to even try to reciprocate when they're expressing their love and desire and need, then the problem is NOT just that you're "not compatible".