What should you do if you have a crush on the brother of your sister's best friend?

Extra InformationFor those of you answering and not realizing the situation, There is three girls and 1 guy involved. 2 girls are sisters, 1 girl and the guy are brother/sister. One of the sister pair has a crush on the brother of the brother/sister pair, and the other 2 girls not involved in the crush are best friends. (A-Female, B-Female, C-Female, D-Male. A/B=Sister Pair, C/D=Brother/Sister Pair, B/C=Best Friends, A has a crush on D.) Answerok well first of all, you should offer to go to his house when your sis goes to be with her beste 4 a sleepova or something, be cool around him,. don't be nevous, most guys like girls who are rebals and who speak up, not that I'm a guy but i know whyat they like

I am a guy and I like a girl that is bold and brave. But she has to kind to me, to the point were i feel comfortable with her.That is what i would want

Well... what's the age difference? First of you should try talking to your sister and see how she feels and how she thinks her best friend would react. Then if you're comfortable... talk to the guy maybe??

p.s who ever you are come right out and tell her/him you have a crush