Well it's a good thing you gave him condoms then.

I'd rather have a friend as my sisters be and future husband. at least you know and keep tabs on things.

I believe your friend has broken rule #18 paragraph 4 in the bro code. Which states no bro should sleep with another bros' sister, mother, brother, or any other relative without at least making sure said bro is ok with the two hooking up. Although I may have to check it to make sure that's the exact rule that has been broken. I am quite positive. The code has been broken

What business is it of yours anyway? None.

Is it really any of your business? Your sister is her own person, as is your friend, so what if they decided to have sex?

that's breaking the ultimate friend code right there. dump your friend and tell him to back off your sister.

At least it's safe sex?

Don't be a **** block, I'm sure you've ****** someone's sister too

that bastard..

You're an enabler of true love, lol