I have a friend who is starting to annoy me. When we are together, we seem to get on well and have a good time but since the beginning of this year she has cancelled on me, or turned me down when i've suggested a catch up, a lot. The thing that annoys me is not so much the cancellations, life can be a bit crazy sometimes, but the fact that she never does anything to rearrange and I end up having to make the effort. If I was cancelling on someone, or even declining an invite to something, I would always offer up an alternative, even if it was a bit vague.
I'm actually wondering if I should be taking a hint that she doesn't want to spend time with me. So, if you had to cancel a (hypothetical) night out with a friend would you just say 'sorry i can't make it + reason' or would you add something along the lines of: 'but i'm free next Thursday so maybe we could do that instead'?