Its so difficult to be an Organiser

So wat if my birthday is comin. Wat so great abt birthday?? I really dunno.... I wanna to treat my gd colleagues for dinner. But sometimes its so difficult to find a day where everone can b available. At first i plan on sat, den one of my friend can't make it on tat day. so i decided to plan it on fri. Who noes, KT is nt free on tat day. Finally i found a date on the 5th. i got my colleagues to change fr afternoon shift to morning. All done n they changed the shift... Guess wat???? KT got a dinner with his own dept colleagues.... I began to wonder wat went wrong... its really so difficult to organise something....So tired..... Y its me again.... All i ask for is jux a simple dinner... Y things become so complicated....... I am really veri disappointed.. The worst thing is next weekend KT is working on both sat n sun.... Do i still stand a place in his heart.. i really dunno....