So disappointed by him... am I overreacting??

My family got an extremely expensive condo to stay in for over a week in Florida, they got a HUGE discount, and they invited me and my bf to go with them next year. There’s plenty of rooms for everyone. They aren’t expecting us to pay anything even plane tickets. Well me and my bf have been together for 4 years now, living together & planning to marry, and we have never taken a vacation together. He went to another country to see his family without me a couple months ago (which I’m not upset about). Anyway I told him about this trip and he didn’t seem interested, barely said anything. I showed him pictures of the amazing condo and he didn’t say a word. Oh but he did say “you need a vacation” and I’m like... this is for both of us. Don’t you want to go? And he said yeah, all uninterested as he had his attention on some dumb shit on tv. I’m like you don’t care? And he said with an annoyed shitty attitude “I just got back from a vacation” and I’m like “wow you’re such a jerk” and he didn’t say anything just kept watching tv. Still is as I’m writing this.

I want so badly for us to take a vacation together, I know we would have a great time. And I explained to him we didn’t have to do things with my family all the time while there, we could go off and do our own thing everyday if we wanted. My family even told me that. Idk my family is so sweet and such a blessing... and he just doesn’t care. We could never afford a trip like this ourselves (at least not now). Seriously I just feel so turned off by him acting like this and I want to smack him (won’t of course) I’m just upset. I feel like he will bail on this trip and I feel unloved.

*he only invited me to go see his family with him once he found out his cousin couldn’t go with him, who he bought a ticket for along with his ticket and didn’t tell me about... but I couldn’t take time off work, he wasn’t upset I couldn’t go