Homecoming

Jorrdin
So last night was homecoming and I had a date and the week before the dance he was super nice and we were having a great time but halfway through the dance he brought me into a quieter part of the gym and asked if we could break up and just be friends with benifits because he wanted to dance with other girls. I told him that was fine but at the end of the dance he had already started dating a new girl plus when we broke up he asked me to keep quiet about it and now he is hitting on my cousin. I think this is very rude of him. Any thoughts?