Should I Bring My Sister?

Question:

hey this was the girl who asked about flirting at the movies. i had one more question about that. since me and my crush dont know eachother too well and since he is friends with my sister, should i bring my sister and her boyfriend along for a double date or could that cause problems?

Phyllis replied:

Well, if I wanted to flirt with a guy at the movies, I sure wouldn’t bring my sister.  Did this boy invite you to the movies or did you invite him?  If you think you would be more comfortable with your sister and her date there, ask your boyfriend if he would like them to come along.