Can I get back Her again in ma life.?

I was having a very good relation with a very good girl for 3 years and 3 months, she ditched me for another guy. She insulted me thrice in front of her colleagues. I abused her last night coz she broke my trust. And everything is finished now. Is there anything any magic that i can do to make her realise that i still love her even after 3 months of break up.