history: Once when I was in college this guy that I really didn't like more than a friend asked me on a date to go get some ice cream.   Once in college this guy I was just friends with asked me out to get ice cream.  I could tell he really liked me and I didn't want to lead him on so I told him I had a headache.  I know that he knew I was lying and I still feel guilty to this day about that!
current: yeah that's tough. But can you imagine how bad you might feel if he had a REALLY good time on the date and really thought things were going somewhere with the two of you?
next: Yes, I know thats what I was thinking.  I just don't know if I should have said the truth that I didn't like him that way instead of lying and saying I had a headache.