My old best friend was way prettier than me, most of the guys at work fancied her but she used to do my make-up and tell me I was gorgeous. Then she ditched me for two other girls, one of whom was prettier than her and the other was not. They both teased her and made her feel ugly to the point that I'd see her crying going into the toilets. I really want to help her but she knew she was my only real friend at work and she just left me and I'm still angry at her. Am I a bad person for not wanting to get hurt again?