I get rubbed pretty raw when I get stood up for a date, especially if everything had been going really, really well up to that point. If she offers an explanation I'm pretty easy going about rescheduling or taking a rain check, but if I don't hear anything from her at all or it's over 24 hours before I hear anything back from her I'm going to be pretty pissed off that I wasted time on and probably started liking a girl who didn't like me and who couldn't do me the courtesy of rejecting me or at least canceling the date properly before doing the fade away on me.

I tend to fall pretty fast for someone somewhere between the 2nd and 5th date, though. Personality flaw, I know.

When it comes to friends flaking on me, I'm more forgiving because I've had a lot of friends with anxiety and depression issues, so sometimes they've just been unable to make things, but they've always been pretty good about letting me know they couldn't make it well in advance, so I didn't feel as let down or affected. Finding out at the last minute without any explanation still isn't great, but it's just annoyance at them being crappy about personal time management rather than feeling anything with any real intensity.

Don't know how I'd feel about a friend flaking on something super important though, or managing to flake consistently to the point where I just stopped inviting them out or hanging with them, since I've never run into it before.

And would how they flaked influence how you feel/act? (e.g. If they gave a reason vs no reason, if they apologized vs no apology, etc.)

Reason and advance warning are like a soft answer. They turneth away wrath. Because, hey, I'm human. I understand that life happens.

Sometimes my mom has a medical emergency and I have to take her to the hospital. Sometimes my cats have decided to give birth and I had to stay home and make sure everything went okay(don't worry, they're all spayed now. Getting sick on the date your pets are scheduled to be spayed is a great way to get kittens though).

But people I respect and value, I tell them when I'm not going to be able to make it and I tell them why or I tell them that it's something personal and sensitive enough I can't say over the phone if it's something really embarrassing like I got stuck to my girlfriend while having sex and had to get unstuck or some other hypothetical situation where I wouldn't want that disclosed or weighing on their mind while they did something without me.

And if someone won't give me advance warning when they could have and don't tell me when it was likely nothing at all sensitive or personal, well, that would make me feel the opposite of respected and valued, which isn't great for friends but is really pretty terrible when I've been falling for someone and found out they didn't value me at all.