I slept with my girlfriends little sister?

You should definitley tell your girlfriend, maybe she will respect you if you are honest with her. Sorry to have to say this, but you have to pick, your girlfriend or her sister. If you chose to stay with the girlfriend, stay out of touch with the sister for good, promise your girlfriend she is the one for you, the one you want, and nothing like this will ever happen again.

But more importantly give her time to heal, 'cos not only did you cheat, more than once, you cheated on her with probably one of her best friends, so she's bound to hurt. And if her sister is pregnant then be there for her support the baby, because afterall it's you that put everyone in this mess. (not being mean) have some self control, and be with the one you truely love.

I'm guessing she's definitely under age. Here's what I would do. Pray she isn't pregnant and they you don't get the cops called on you.

Tell your girlfriend and be honest with her about how many times, why, who started it and everything be upfront and honest and if she's not pregnant get away form that family and learn from your mistakes.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.