Okay so since everyone is asking

the convo went down like this.
He comes to the table and it's hello ladies, can I take your order miss ect, and I'm like trying to contain my smile because I realize he doesn't know it's me. So I had just finished eating my salad but we are waiting on our food still and he comes over to fill our water and as he is filling up mine he goes,
Waiter:"So I have to ask, are you a [lastname] girl, like are you Allison's sister?
Me: "Yeah I'm her older sister! "
Waiter: "Oh nice I knew your brother Josh in high school, were you like a couple grades below us?
Me:" ahhh no I was in your grade"
Waiter: " oh really are you and josh twins I never remember you did you go to like a different school, how is josh by the way?"
Me: " ahh Actually he is really good but he is me haha lol awkward smile. Hey Alex how are you lol"
Waiter: gets super red is like omg omg I had no idea you look great I thought you looked similar random babbling that is hard to make out
He was so nervous every time he came back haha I was like ahh don't be sorry you just made me so happy you have no idea but he was petrified lol.