or is it just me??

i've learnt something..

when i said something like, " i'll come n meet you there tomorrow, i'll try", to someone, they expect me to come no matter what happen..

when someone told me, "i'll meet you there tomorrow..other people can wait" , i am not suppose to really wait for that people to come. either they forget, or postpone to other time..which is perhaps in the next lifetime.

is there anyone out there learnt the same thing, or is it just me?