It all comes down to how much you like your friend. How big you are. And how much you like this girl.

If you and ur friend are really good buddies then tell his girl to break up with him first if she really wants you that bad. That way you don't wind up on jerry springer.

If you're tough all you have to do is tell him she's yours now and stay the fuck away or you'll break his face (this is an example of what to do if you're a low life like some people would call me, just know that you're breaking all ties with this dude by doing this too). This is usually only a good idea when the girl is really unhappy with her man.

Now do you like this girl like you wanna marry her? Because you'd better be fucking crazy in love with this girl before you pro-verbally ass-rape your friend.




How hot she is should also be another consideration. If shes gorgeous and sexy then thats a go, but if she's more of a mental partner than a physical partner you might wanna be a little more wary. Because you can always develop a pretty girl into a smart girl, but an ugly girl will always be ugly (that sounded SO bad but thats not the way i mean it. beauty isn't always found in looks, and sometimes a girl whos hot to one guy will be a total pie face to another. and thats okay)

Maybe post some pics of you all so i can help out more. Seeing who im dealing with always helps (for all i know you could be a 300lb black guy who has killed 3 people and you're gonna steal a girl from some 150lb mexican acrobat. and this girl could be paris hilton for all we know)