Sometimes you just don’t want to go, even though you like the person. But you can’t just tell the truth and say: “I don’t want to spend time with you tonight.”, because you do like the other person and they will take it personally even though it’s really not.
Lying is the best, nicest solution, but when you get caught it will destroy everything.
The only conclusion here is that people do not appreciate honesty, that it’s considered mean–even when the intentions are the opposite–which makes things very Babylonian and complicated.
And then you become aliens.