I’m dating my friend’s ex and she blew up on me?

My friend and I stopped being friends after I dated her ex boyfriend and she basically over reacted so badly. Tbh Its not my fault if the guys want me and not her, she has always had it easy in life anyway and has always been the “pretty” one with guys attention. She’s so up herself. I wanted to take her ex to show I could get what she has because she doesn't deserve it. She always acts like she’s better than everyone and I’m sick of it. Anyway, after I dated him she blew up on me and called me a “jealous fake friend” and called me “ugly on the inside and out.” And she told our friends what I ‘apparently did’ and now everyone has sided with her? Isn’t she in the wrong here? Why has everyone taken her side and not mine? She literally called me ugly.
I’m dating my friend’s ex and she blew up on me?
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