?

What if she doesn't mind only because she's convinced he loves her?

If she loves him too, then it's okay, it's consensual and creates good memories. If not, it's just stupid. And the emotional wound from a broken heart is still less severe than after a rape, and in my opinion, it's easier to heal. Plus, it's much better to give yourself to someone you love, even if they break your heart later, than to experience emotional exhaustion. After all, for example, maybe at the moment of the "curtain call," the guy really loves her, and then he realizes that she's boring and the feelings have faded?