me too, i avoid making commitments to plans. because i know myself well enough that i do often end up cancelling or not showing up. it's best for me to roll with the flow of the bp, which i have no idea how i'm going to be feeling when. it's nice your friend gave you his best possible yes, which includes preparing you for the fact that he honestly may or may not be able to make it. it's also so nice that you make such effort to understand it.