Without being too graphic, my OH said that I'd ruined the moment/sex for him last night as I pulled away/rolled over half way through his big O thinking he'd finished. He's also becoming obsessed with using sex toys every time, in particular an extender. Despite me telling him it is slightly painful and that he really just bought it for his own pleasure, I feel obliged to go along with it to please him. Our relationship is already on rocky ground, so I don't know what to do.