As much as women should be dropping everything to coming hang out with you, sometimes they don't.

Example: been seeing this girl for about 2 months now. Last Thursday, we discussed a 'rooftop wine night' at her place, but when I confirmed a time, she didn't respond back. I didn't send anything additional, made other plans the next day, and had a great weekend. Sunday night, she randomly apologizes and says she forgot to respond (bullshit). She also stated she had a running event at 6am the next morning and didn't want to stay up late (legit).

In these cases, is it best to do the usually 'I don't really care, you're replaceable' text like: "Nah, that's fine. Made other plans".... or not reward bad behavior and say "If you thought that way, you should have just told me then. Ended up making other plans"