Call it skanky if you want..

..because I know it is.
I had sex with my bestfriends brother and shes clueless about it.
Should I tell her?

thats not skanky. thats normal...ddont tell her just let it go...cus what happens when you want to ride his c ock again?

Absolutely not. Unless you tell her everytime you have sex with anyone...

no, unless she asks or really thinks you did.. be honest.
hahah , or you could just not tell her.

HAHA, DONT TELL HER, TELL HER LIKE 3 YEARS FROM NOW AT HER BIRTHDAY PARTY, IT'LL BE HER PRESENT, LOL

haha, uh oh, no more sleep overs if you tell!

dont tell her it mite mess up your friendship and her brother may not want her to no

first off. thats way wrong and disrespectful to your friend.

personally if you dont tell her there will be akwardness when your at her place when her brothers home but if you do tell you can ruin your friendship not like you havent already its just a secret ruined friendship that you'll have to hide if you can deal with akwardness and guilt go for it.

I just know I had a friend that slept with my brother and we got in a huge fight when I called her out. I kicked that b*tches a** and safe to say she never came around no more.

but hey its like if your best friend slept with you brother im sure you wouldnt care

right?

ignore teebug. if she asks tell her. if she beats up every girl that sleeps with her brother I feel sorry for him lol.