On first thought it sounds like a complete incompatibility to me, I'm afraid.

Doesn't sound like you'd get to have a Lego room in your house together in the future.

But on the other hand, maybe you could get him and her on-board, and it could be something thst brings you and her really close together.

But no, in the moment I don't think you were the asshole, it was a shock and you reacted in a shocked way and needed time.