Revenge?

Is it so bad to want revenge or no? I am confused in this life...I lost my loved one to the damned well lets just say...my closest friend was a rat. It is so hard to live without my true love... tho I have also fell in love with this aussie boy whos hot and a great singer... so kind. Idk if I can love like I did for my true love.. I don't know who to turn to anymore my only person to guide me on this earth is no longer apart of my life sadly.... HELP ME SOMEONE. I need guidance I cannot do this alone im only scared and confused... please I dont wanna be alone