Seriously? You can't flirt with your girlfriends sister! The fact that you would even consider such a thing proves you are pretty much a cad and mental midget.

this is all wrong. where are ppls morals these days haha. none of u deserve a girlfreind in the first place.

wow

I dream about my girlfriends sister too. I also feel the same way when I wake up.

he's not repulsive, he's lookin after no.1 don't be a slave to convention and consign yourself to a life of miserable boredom with a woman you don't fancy. Life's too short, you only live once so freakin enjoy yourself while you can. Chat up the sister and when you've primed her split with your g/f. Then leave it a few months before u start dating the sis (you'll need her buy-in to the strategy). I badly waana do my wife's sis and am playing the long game.....

what if you really like her sister? Life is so much better when her sister is around, and downright sad when she's not. I think it's love.

dont do it bro, i tried it and i lost my girlfriend and didnt even get her sister either!

you should smile and try to be around her alot also kiss at her a few times and if she doesnt tell then you got her hook lol

u shouldn't be doing it anway.don't incourage him.his a prat!

Thank goodness I don't have any sisters so that's no an issue for me!