Finds you sister before class

After everyone is gone you walk out of the gym and walk towards your locker unit you see your sister talking with her friends so you lean against the wall waiting and start looking at your fingernails until a hand slaps the wall next to you making you jump and look up. Looking up you see a larger pair of breast in front of your face, but you quickly avert your eyes and look up at the face of someone you know very well. "H...hello Brittney did you need something from me?" Brittney was one of the only friends you had as a kid since you're parents are very protective but after she started puberty you only saw her a few times a year at certain parties and family gatherings. "Aww sam I'm hurt, can't I just want to talk to a friend your making it seem like I'm a stranger." Your quickly shake your head "No No i just mean we don't really talk anymore so you might have forgotten about me" you quickly try to list as many excuses as you can until Brittney laughs and puts a hand over your mouth.

After a few seconds you calm down and try to move her hand off your face and she slowly lets go "finally calmed down, good now I've been thinking about what you've been up to these few years why don't we catch up?"

You look back and fourth between Brittney and your sister trying to decide do you go with Brittney upsetting your sister since she has probably seen you or do you decline Brittney and go to your sister and upset one of your only friends?