I completely forgot about a girl I wanted to go out on a date with tomorrow and now I actually planned something else.

The thing is: I'm pretty sure she's going to flake since she didn't seem too enthusiastic when we agreed on time and place. It wouldn't be too much hassle for me to free half an hour for her (naturally I would never tell her that I had to cancel something I had planned to meet her). But I'm thinking if flaking myself wouldn't be better (abundance mentality, not being available, list goes on).

What's your take on flaking as a guy?