AITA or is he? 

Context: 
my bf's friend's mom is organizing a trip to Amsterdam for her sons friends because she lives there. She is paying for their flights and he is unsure of the boarding situation. 

When he was invited last year we talked about me going with him and paying my own way, flight, lodging,  and food.

 This is because our jobs, we have very little PTO which vacation, sick, and personal are all in one, and a very strict attendance policy at our jobs we cant really do much with vacation time. It's really easy to get fired because of attendance. 

Hence we wont be able to take a real vacation together because of these trips if he goes solo. 

Yesterday he admitted that he never told them about me coming a long because he didnt want to have the awkward conversation of asking if I could come, and didnt tell me i shouldn't come because he didnt want to hurt my feelings.

This is AFTER i used up all of my PTO and scheduled it for these trips.

Some context:

He is also a groomsman in a wedding in FL that we planned on going to together. Last year he was also a groomsman for a wedding we planned on going to together but he never sent the plus 1 and by the time I grabbed it and mailed it in, it was too late and he told me he was going to stay with the guys (lengthy car ride so we were going to get a hotel together originally) so I stayed home alone, and btw it was our first anniversary, he left friday, our anniversary was Saturday (day of the wedding, which would have been ok if we were there together) sent me anniversary flowers and a bear-never did this before, and came back Sunday.

This upcoming wedding invitation did not have a plus 1 option so he was supposed to confirm with his friend that I can come.
Which he hasn't done. PTO already put in for this too.

For Amsterdam and Europe, for months I have been asking him to confirm dates, details, and to tell them I'm coming but paying for myself. We agreed that we were going together no matter what unless PTO got declined for me, or if I cant afford it. -which is not the case.

Last night he got communication from his friends mom that she is going to order his flight ticket and confirm with him that he is coming. he failed to tell her or his friend that I am coming. 

Last night was when he finally admitted after I got upset that he hasn't told them I'm coming, that he felt bad and weird asking them if I can come when I wasnt invited
 ( I do not know them, he has never introduced me to his friends, we only hang out with his family, our mutual work friends, and my friends- which me hanging out with my friends without him makes him feel uncomfortable so if hes with his friends I'm alone at home ) 

i have one day a week when one girl-friend sleeps over on mondays because a group of friends/co workers come over for D&amp;D and she lives too far to go home later. 

Hes been trying to get me to not have her sleepover because "our bed" at my place is his bed too and he doesnt like her.

We have been together for over a year, work together, and he stays at my house fri-sunday nights every week. Our weekends are always spent together unless he hangs out with his friends (not often, they live pretty far) and we hangout at work mon-thursday. 

I am not only upset, furious, and hurt, but this is something I have been considering breaking up over. We talked it over but reached no resolution as to if I'm going on either trip. 

I'm so hurt that he would rather lead me on and hurt me later and completely putting something off because he doesnt want to have an "awkward conversation". 

He did this last year too. He went to a bachelor party in Vegas for several days with a group of guys I dont know-which I was okay with, but because he was saving up for vegas, we didnt get to go an a big trip together for vacation and i settled for a weekend camping trip a couple hours away and another weekend trip to a beach in the winter a few hours away, both trips I had to pay for just to get him to come.

I am his first GF ever, hes never been in a serious relationship until me. Me:F(29) him: M(26.5)

Am I the asshole for feeling upset, hurt, and potentially leave him because of this if he really does go without me?

#TLDR: bf M(26.5) is going to Amsterdam and Europe- his trip being paid for by his friends mom, and Florida to be with friends. We planned for me(F 29) to go and pay for myself, but turns out he never told the people who invited him that I am going, I dont know them, and I was officially uninvited by him, because of never actually being invited by them to begin with. Am I the asshole for feeling hurt and potentially leaving him after months of talking about us going together?