I have been practically best friends with this boy I know, and we both share a passion for acting and we get on fantastically. I went on holiday though last week, and got back earlier on today and came back to find that my step sister has had an argument with my best friend.
I know your probably thinking that family comes first every time no matter what but that's the thing my friend only told the truth to his other friend to protect him. My step sister has blown it out of proportion and has said that I must NEVER speak to him again not under any sircumstances. I odviously said that's unfair and then she said "fine d what you want but he's never coming back into this house not never" and now I feel really bad because I don't want him to feel unwelcome to my home because I don't want him to think that I am against him because he is my best friend and I need him to be there as a friend and I don't know what to do.
Should I go behind my step sisters back and speak to him and go out with him or should I not ever speak to him again!! :confused: Help Me!

Well now I suppose it depends on what they argued about. I'm assuming it must be something serious otherwise she would not have banned him from your house.
What was the argument about?
If it was something stupid, I don't know what it would have to do with you two. But if it was a serious matter,then perhaps she may be right.
How old are you and how old is your sister?

Whether a person can visit or not should be up to the owner of the house.
Also, she said "fine do what you want"? Did she not?
She gave you her permission to do whatever, except bring him over
So, what happened to cause the argument?

Sounds like your sister is being very immature and she shouldn't ask you to choose between your boyfriend and her. Let him go over your house tell her if she doesn't like him then she doesn't have to talk to him.