Well, I told my mother about it to be nice to her, well actually I can't remember telling her about it but I must've. In previous years she came on her own, so I didn't see the harm. She's invited her boyfriend on her own, only phoned and said "we're both coming". Which was where all this came in. She didn't ask, or suggest, she just said he was coming and that was that.

I don't want to cancel the dinner, as we only get to go to this restaurant once a year since it's somewhat expensive. I'll try to suggest another day, however she has already expressed how important seeing me on my actual birthdate is to her (which isn't really something I get to be honest) so I don't know how effective that'll be.