“一厢情愿“？

I always have a doubt on the underlying meaning of some ppl's word...i'm not sure..mayb my intelligence level is not up to their standards or i just assume too much....let me seek your opinion... Scenario 1: One fine day, when you are deciding what to do on your free day, your friend calls you and tell you that she will (note that i use "will" instead of "is") look for you after she has done with her chores, which is roughly after lunch.... The question is: does this mean you have an appointment with her? Scenario 2: Then after lunch, she came with another friend saying that they are off to do some research for something (which apparently is important) and said she will look for you once the reseach is done. The 1st question is: Is this acceptable as a way of telling you that I have FFK (Fong Fei Kei) you but don't worry, I will look for you after my important research? Is this ok for you? The 2nd question is: Does that mean you have another appointment with her? The 3rd question is: Is it ok to get angry when in 1st scenario, you are FFK and in 2nd scenario, you are only told that she FFK'ed you by bringing someone to your place and that she FFK you again after that, saying that there is no appointment and you are free to do anything you want? Given the two scenarios, would you think you have an appointment and reject your other friends' invitation? THE REAL QUESTION IS: TO EXPECT OR NOT TO EXPECT? IS IT WRONG TO EXPECT?