[Mikey]

I understand how you feel. I use to have that happen all the time to me.

And I've noticed what really worked for me, is I became very reluctant to make commitments unless I'm 200% sure that's what I want to do, you know, just like a maybe I'm not sure, we'll see, I might something else going on that day.

so it works out for everyone, no one gets disappointed and you don't end up being an 'unreliable' asshole.