I feel so hurt and angry

An women near by keep making baseless accusations on my character, without checking, whenever i talk to any guys or men. I heard her ex-husband slept around when with her and had an affair. She keep accusing me of sleeping around and seducing men, i once proved her wrong, instead of apologizing, she blamed me for being modern and not traditional and decent like her. It all started when i once talked with her ex-husband. She be mean and interfere other people in it. Say many hurtful words. I lashed out on her once and people think i am bad and take her side blindly. She tries to provoke me and make my every action and mistakes seem like i am a bad person. She once even went as far a involve my family old dog, asked my parents to leave it on streets bcuz it's old and useless, can't even walk. I stilll can't beleive how can someone be so self-important and cruel. If i get angry at her, people will bully me, but she keeps provoking me. How can i deal with her and people around me, they take her side blindly and bully me.

After she involved old dog, i lost my temper on her and pointed out each and every mistake of her, i hate everyone and this world, why r people so cruel and insensitive. I rather be alone than have friends or people who support her and make excuses for her bad behaviours.