Mark forgot his anniversary with his girlfriend, and her feelings were hurt. The next day, he bought her flowers, and she was thankful, but she instantly started sneezing. It turned out Mark had forgotten she was allergic to those flowers. Tomorrow is his girlfriend's birthday, and Mark wants to take her on a date, but he thinks she would probably have more fun with her friends. He is considering not going out with her at all because he feels so down about himself. What has most likely happened to mark?