Emotion negatively

Recently i wonder, realized and commented from friends that my emotion getting more negatively.

Recently i get annoyed easily by some certain so called 'friends' that i used to treat them as real friends. However, i am getting more unbelievable why are they doing now? Am i look like im a fool? or they never take me as friend?

Senario 1 I invited a friend for lunch that day that i used to eat with her but less for this semester as this is a short semester and all bunch of thing was like so packed till i fail to get her for meal. That day, i manage to get her for lunch. Surprisingly, once she met me, she asked me 'how come u have time have lunch with me?' What u guys think? is normal right? ok, that's what i think also. Then move on, after i answered her, i was too busy for this semester, then usually friend will getting 'paiseh' and answer ' no la, ask u for fun la' like that....that she did not. She said, ' are u that busy until u dun need to eat?' i was stung there.....i so regret to invite her for lunch. im so so so regret, i should have tapao my lunch and eat in front of lapiee. When she saw me holding a note: She: you have exam tonight? I : no, is tomorrow. She: last minute study? I : ........ She: no need study one la, accounting subject all very easy one, just write in whatever u think is correct. I : ........ She: unlike my subject, so tough have to study like hell..... I : but i remember ur exam is 50% objective and 50% essay right? She: no, is not only objective but true false, you know what, true and false lagi tough!!! I : ........( true and false stand 50% to get correct, but objective stand 25% to get correct , essay stand less chance to get the key words, i dun really understand what she meant it)

Then there goes my lunch......

Senario 2 I wonder what happen to me, am i that so not convincing in certain point? Why i face the problem that whenever i voice out any comment, there will be like ignored by some of them? Am i that unreliable for them? I believe i should keep myself silent at that time, no point for me to listen carefully and voice out my opinionl i might just listen and write down whatever outcome decided. In this case, i not blaming anyone, but myself for being lack of confidence. When a person ignore my opinion and voiced out theirs one loudly, i will never want to shout out louder than them to express my opnion AGAIN. For me, loud doesn't mean you are right or you have confience. Not that you should say softly or what but at least dun shout till people 'shh' you, right? In that incident iwill choose to silent myself to avoid any argument. Ended up, i ignore the quality of the discussion but i just focus on when can we end this discussion.

In this 2 scenerio, what u guys will do? Just ignore and never put yourself in such situation? For me, i have been agitated for few days, i admit im a bit irrational and too emotional or someone may accuse that im too stupid or what. However, im now getting better as im letting them go, in my conclusion, that is nothing to do with me, why should i care for them? who are they to me?