I decided that I should still go for Christmas.
Does your  boyfriend want you to come for Christmas?
He doesn't want me to come to his house for Christmas.
You need to be with your boyfriend for Christmas like most couples are, it can be lonely otherwise. If you are not invited then don't go, stay where you are. He might have a relative who is Covid positive attending, and you will catch it if you go there.
Maybe I'll just stay here for Christmas.
That's not a bad idea either. It's ok to not to go anywhere on Christmas. You can connect to your family, friends and boyfriend remotely.