scenario: my friends and i just handed in our thesis papers today. i've been working with one friend on campus basically the whole summer. another friend of ours had been working at home, so we didn't see her very much. the three of us planned (since friday) to take a little day trip tomorrow to oxford to catch up and relax. study-at-home friend just called to say that her boyfriend took her to oxford tonight to celebrate and he proposed to her, she is now too tired to/uninterested in going back tomorrow.
if you were in this situation, what would your reaction be with regards to canceling the plans?