It's hard to know what to say since you haven't said what you did. I understand you don't want to but are we talking along the lines of serious physical or sexual crimes against the person or just silly things like arguing or stealing off them? If it is something as serious as rape or severe physical assult then my advice would be buck up and suffer - you deserve the bad treatment. If it is something trivial like a stolen item or something like that then they need to get over it and I doubt you could have caused them much mental anguish, at least not enough to give them mental illness if it wasn't rape/sexual assult/physical assult or severe bullying/taunting even.