Was I in the right or not with this situation?

So me and my boyfriend had an issue today. We didn't really fight/yell but I was upset and he knew it. We quickly ended up talking and resolving it but I was wondering was I even right to be upset?

He was wanting to leave for 3 days/nights on his own and go hang out with friends and drink the whole time. We live together by the way. So naturally, I was upset especially with the holiday (in the USA) being Saturday. I was not invited to join which I was overall okay with but I was very upset he was wanting to go on a long drinking binge like that and ditch me.

I got some stuff together and was planning on also leaving and staying with a friend for the weekend or maybe visiting my mom. He saw I had a bag ready and his entire face changed. His eyes got big and his face dropped. He asked why I packed a bag? I said if he was going out I was too. He stared at me then wanted to talk. I explained why I was upset and he said he had planned to ask me to come along but I had walked away too fast earlier (I had thought he was done talking). I explained I had some breakup anxiety too due to a bad relationship and cried a little when I explained that. I apologized to him and he apologized to me for making it out to be different than it was and for forgetting the holiday this weekend. He told me he really hated seeing me cry too.

He ultimately decided not to join his friends and said he'd be making plans for us for the holiday instead. He told his friends the reason and they all groaned and said now they had to go buy stuff because they forgot too and thanked him for saving them from getting scolded for forgetting by their girls.

Was I right to initially be upset? He confirmed he loves me a lot and never wants us to break up because he's really happy with me. I said the same. He apologized again for the misconception and I apologized again too.

Does this all sound genuine or does it seem like he just wanted to give me my way to shut me up?

Was I in the right or not with this situation?
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