I think if my t had said this to me, it would make me go into the depts of despair too Quietcat. I know he was being honest with you but did he really have to be so blunt with you.
Last session was flat but next one doesn't have to be, does it? This was not your fault so don't feel like you are to blame for this, t has his role in this too, you bring him the ingredients and it is up to him to make the dinner.
Please don't beat yourself up over this, it wasn't your fault.
Do you think T was dissapointed in you? I get a sense that this is what you think and this is why you went into despair- correct me if I am wrong of course.