Cheat!
naturally just flirt with him! and for him to lose his girlfriend he has to be way to imature or mean not romantic or disgusting!
starving yourself for weeks
The worst way is text message.Because your to scared to say it also they will send txt messages to other people saying you broke up with him or her.
The worst thing a guy can do to hurt his girlfriend is by taking her off his phone number then dumping her then flirt with another girlfriend!
Ask your friend's girlfriend why she thinks the way she does and try to resolve the problem/connection between you two.
Dumping her over the computer or through text messages are some of the worst ways to break up with a girl. Sending someone else to do it is also pretty bad.
Your own
Ideally, you don't. But if you are still with her, you may as well confess because secrets have a way of coming out at the worst possible time.
World's Worst Tenants - 2012 Squatting Ex-Girlfriend 1-1 was released on: USA: 12 June 2012
If you are still married and have a girlfriend, then the person will probably lose the wife.
pants, shirts, coat
Have sex with him and make sure his girlfriend knows, then he is all yours.