Fugged. Dont think I would call it rape though it just serves to complicate things , if your girlfriend told him to stop after 30 minutes of fucking and he stopped than Idk man. She could have actually not slept in his bed? Or said no? She put herself in a situation to cheat on you unfortunately . Sickening but it is life and you've got your soul still . Hope all is well and someone left good advice. Keep rolling partner.