Excuses to cancel a date. I'm sorry, but I have to cancel our date tonight. I know we were both looking forward to it, but something unexpected came up and I won't be able to make it. I hope you understand. I feel terrible about this, do relationship breaks work but I have a family emergency and I need to be there for them. I hope you can forgive me and we can reschedule our date for another time. I'm not feeling well and I don't want to risk getting you sick. I think it's best for both of us if we postpone our date until I'm feeling better. I hope you can understand. I have a work deadline that I just can't miss. It's really important and I need to focus on it tonight. I'm really sorry for the short notice, but I hope you can understand. My car broke down and I won't be able to make it to our date tonight. I'm trying to get it fixed as soon as possible, but it looks like I won't be able to make it in time. I hope you can understand and we can reschedule. I have a prior commitment that I completely forgot about and I won't be able to make our date tonight. I'm really sorry for the mix-up and I hope we can find another time to meet up. I have a friend in town unexpectedly and I promised to spend some time with them tonight. I hope you can understand and we can reschedule our date for another time. I'm really sorry for the inconvenience. I have a personal issue that I need to deal with and I won't be able to make it to our date tonight. I hope you can understand and we can reschedule for another time. I'm really sorry for the last-minute change. I have a pet emergency and I need to take care of my furry friend tonight. I hope you can understand and we can reschedule our date for another time. I'm really sorry for the inconvenience. I have a sudden work trip that I need to go on and I won't be able to make it to our date tonight. I hope you can understand and we can reschedule for another time. I'm really sorry for the short notice.