Am I right to be upset?

So I went away for ten days and me and my partner spent Christmas apart I spent it with my family and he spent it with his, so i came home yesterday and we had plans for New Years and New Year’s eve., but he’s taken off to his family friends house to spend New Years there. But we had made plans to spend New Years together before I went away. Am I wrong to be upset? Is it childish to want to see the new year in with my fiancée? And no I wasn’t invited as me and this friend and his family don’t get along. As they both verbally abused and threatened me in the shopping centre.