Am I right to feel annoyed?

Just over a month ago my friend asked if we would want to go out for halloween with her and her boyfriend. Our boyfriends get along really well and hang out themselves too. They booked it off work and I asked my boyfriend to as well.

I kept reminding him a few times a week since then but he never got round to asking. Don't blame him for that his work can be a pain.

But luckiest thing ever he randomly has been given the night off! Only a girl he works with is having a party the same night.

At first he told her maybe as he might have plans. As if he forgot even though I've been asking every week if he can. Then he gets all mad at me for having plans so he can't go to this party. I even say well maybe we can leave my friends a little early and go to the party after. But he goes on about how he can never do things because of me. I hate how he always turns around and blames me for everything.

The girl wasn't even fussed about him going! She asked if he could cover another guys shift so the other guy could go to her party! Meanwhile my friends have been looking forward like crazy to seeing him and going out with us.