friend had a free night last week. She HAS to see someone, anyone, socially on the nights she is alone. I don't get this, but we are all different. We see each other a lot, so we are not casual friends. She asked if I was free to see her that night. I was, but I somehow just felt I was filling her social gap for that eve, like I could have been anyone, so long as she was with someone. So I told her I was busy. Of course she then asked what I was doing. I made an excuse of seeing my sister. She then asked what me and my sister were going to do.