Yes, you are right. Usually in reference to a date.

"flake out" - did you mean "fake out"? "flake out" would indicate someone acting erratically "fake out" indicates a deliberate intent to mislead someone. "fake out" is usually physical and not verbal. Most commonly used in sports; a sudden change in direction to mislead an opponent.

Yes, that's exactly right. Amusingly, if someone "stands you up", it means they have "let you down"!

means to make someone stand ( mettre (quelqu'un) debout ) en francais ; To rise to an upright position on the feet. or to place someone into a standing position another meaning = not turn up for a date . to fail to keep an appointment with someone, especially a romantic date . So when you stand up someone look like you make plans with someone, but don't go. and you wont tell him that you will come or not Example : You've stood me up two times now!

You could potentially say that the person "bailed on you", although this is usually after they have told you they are not coming, or were with you but left early. If a person "stands you up", it's without letting you know. Either way, the person is being "flaky".