Breaking up a relationship..., is it possible? Options

[31miracles]

When the girl (Abigail) I liked who has been my good friend for 6 years became single after 2 years in December, I was shocked and excited. I started hanging out with her on a weeky basis, and we became best friends. The problem was, everyone knew I liked another girl, and I wasn't sure if I still liked her. Therefore, I didn't feel free to go after Abigail.

Ok, another one of her good friends (Sam) like her. He pretty much stalked her everywhere in school, made it hard for me to talk to Abigail alone. He asked her out in Feb. and got rejected. Abigail came to me very sad, because she didn't want to hurt Sam's feelings. She told me how she dreaded talking to him on the phone for one hour every night to make him feel better. Like a little puss, Sam kept on crying and asking her out for 3 months. Finally, after going to prom together in May, somehow Sam got Abigail to agree to be boyfriend and girlfriend.

Sam beat me... and I feel like somehow I kind of lost a friend in Abigail. Ofcourse, I was jealous. Sam smiles to me in the hall like we are friends and rubs it in. I didn't see much of Abigail over the summer.

Recently, because Sam left on vacation, Abigail and I hung out some. It makes me feel good that we are still best friends, and we share lots of things together. However, I never go towards asking about their relationship, because I don't want to seem jealous. Two nights ago, after dinner with Abigail, when I dropped her off, we hugged for two minutes. Driving home, the warmth made me feel like I needed her and "reignited my flame". So therefore, I have decided I must try.

Finally, the evil question...
Is there any way to make two people break up?
I could play mind games and mess with Sam's head.
Any ideas or previous experiences?
I just can't wait for this relationship to end, because my patience is gone... I like Abigail and I hate Sam.