Am I crazy for feeling this way?

Me and my boyfriend of 3 years don’t currently live together but plan to in another year. We promised when we get our own place together we will get a puppy together because I personally feel like it’s something we should do together as a couple because if he got one himself I wouldn’t feel connected to the dog. I wouldn’t feel like it’s our dog because it wouldn’t be it technically will be his dog. And he promised me this for years now. Also at the moment we are long distance but not super far just 35mins away . Today he lets me know that he went and adopted a puppy with his roommate and he understands if I’m upset. But I’m furious . I feel stabbed in the back and honestly I don’t want to be around him or the dog. Also I was just with him for the past last 3 days and he tells me this after I’m already back home for the week. And he goes and does this after I told him my big Valentine’s Day plans and now I feel like I need to cancel everything.

Am I crazy or was this a selfish act?