What if the big betrayal is he hears Fisk and Vanessa discussing what they're going to do to Matt's loved ones in a very unspecific way that sounds vaguely threatening, and then they go something like "and then we'll take care of Matt" etc and Matt immediately assumes they're going to abduct/murder him and his friends and oops, nope, turns out Fisk and Vanessa were actually making arrangements to keep them safe because they actually do care about Matt, but they're just so creepy he's honestly been expecting them to fuck him over and he immediately jumps to the wrong conclusion?
Re: Fisk/Matt/Vanessa - Mistaken betrayal