Oh, your story remember me mine in a RO private server. Lot of people were offering me cash shop items to buy my heals (and my frendship by the way) or to be safe in PvP. I accepted all items they could give me (and they were really OP), but I never stopped to kill them or to heal their enemies in PvP x’).
Never trust someone who wants to buy your soul (and never trust the one you want to buy).