I was cheated by the girl i loved the most and cant get over it,, iin?

Sally and Ive been in love since high school and continued our affair all the way to college. Shes the most beautiful girl Ive ever met, and because of her all the guys were jelous of me. But neither of us gave a damn about them or the few girls that were interested in me. Theres this big and rich guy Bruce, who always had eyes on her. But infront of me they would never be near each other. But few months ago, one night I thought I would give a surprise visit to Sally but when I got to her place, I watched from distance, as Bruce and Sally were hugging and kissing each other. I got so angry, I charged at Bruce to bash him down but was knocked out by a punch from his massive fists (he lifts about 250+ lbs on the bench press!). I expected Sally to support me but see simply said that it was over between her and I and it woud be between her and Bruce from now on. I have ubdergone periods of depression since. Yes I can pay her back with another girl, but I cant find any girl as attractive as her, because she truely is the most beautiful girl I have ever met (unless you count the celebraties, no chance with them!). But I am not only talking about physical attractiveness, I cant find any other girls as much emotionally attractive either and how such a sweet girl like Sally can do this tho me is beyond me. I want her back! I wanna kill that prickhead Bruce! Please help me!!!!