Finn and Poe are preparing for an arranged marriage, but Finn is actually genuinely in love with Poe, and thinks that Poe is at least fond of him. But through gossip he learns that Poe (a noble by blood) is only marrying him for his family's money, because Poe's household is in debt after either some disastrous investments or some crazy war. Finn is broken hearted, but resolves to be as helpful to Poe as he can be, and stay out of his way if he wants to have other lovers. That's the least he can do.

Meanwhile, Poe is incredibly enchanted by his soon-to-be-husband, but worries that Finn's newly wealthy family is only doing it for his title, because he's been targeted by fortune-hunters before. His worst fears are confirmed when Finn suggests he's okay with Poe bedding others. Poe sadly extends Finn the same courtesy, so he won't be lonely. All they have to do is make an heir, after all.

+1000 if they're both into the sex, but think the other is just "bearing it", Poe, because Finn never looks him in the eye when they do it (Finn is actually too overwhelmed with his love). Finn thinks Poe hates it because he always looks solemn when they do it, like he's not enjoying it all (but it’s because Poe feels guilty for enjoying it so much when he thinks Finn doesn’t).