It was Valentines day and I decided to spend it with one of my hotter looking plates (she asked for exclusivity earlier this year). It went something like this:

Me: (2pm) We'll go to X place tonight. Be at my place before 8pm and we'll go together.

Her: Where? :))

Me: It's a restaurant.

Her: Uhm..when did you take this decision?

Me: Why?

Her: You told me very late (etc...)

Long-story short I tried to find out what she's so busy with and she gave me some bullshit reasons. Around 5:30pm (more than 3 hours later) she said "sorry I can't be ready by 9pm, we can meet after that or some other day".

After that I said that she should have told me earlier and proceeded to soft-next her. Around 9pm she sends me a message asking what I'm doing (which I ignored). Later on Facebook she saw some pictures of me with another girl at the place we were supposed to go together.

Did I overreact? How should I proceed next?