Hey Haley...
Hayley, what you're seeing here a lot of pent-up male frustration being misdirected at a hapless victim. In this case you.
I don't blame you for being confused at the ambiguity on here. Sometimes I get confused by it too. Not as confused as I get when dealing with women, but sorting thru the advice and sifting out the important truths is a skill that is learned, not inherent.
It sounds like your guy made a mistake. Was it disrespectful? Yes. Was it malicious? Probably not. Does it diminish your trust level? Yes, but if he's honestly repentant, I say forgive him. As we traverse from our teenage relationships to our adult ones, forgiveness is one of our most important traits. You can't go thru life cutting each others throats over little things. You end up on dating forums trying to figure out how you screwed things up. ;-)
I think in this case too much has happened for either of you to realistically salvage this relationship. You should probably use it as a learning experience and move on. Keeping in mind that when you do something and you feel bad about it later, that you're probably not supposed to do that to anyone ever again.
I think forgiveness in this case is yours to give, not to receive. Not that you're not deserving of it. I'm not making that judgement. You just need to forgive him for yourself, and hope that you both end up somehow happier because of this.
Sorry so this was so long.
Chris