I'm 99% certain my partner has bought tickets for a West End show for my forthcoming birthday that I really have no interest in seeing (she does, as a friend of her family is in it). In fact, long before Christmas the subject of her wanting to see it came up and I said I didn't want to (for three reasons, including bad reviews as well as being not my thing). At Christmas she told me to block this particular date because she'd bought theatre tickets for my birthday in March.
I know if I say that I don't want to go, and that we had discussed it, she'll deny I ever said it due to brain fog. She gets it intermittently. For example, something I fixed 9 months ago broke again two weeks ago. I fixed it again, in front of her, and she was pleased. Last night she was ordering a new one because she'd forgotten I fixed it.
Do I just grin and bear it when I open the envelope or do I say something? She'd be disappointed that she chose the wrong thing but I know if I say we had discussed it, there'll be denial and I'll be made to feel like I'm gaslighting her again.
She bought me an opera ticket for something I didn't want to see as a surprise at Christmas. I acted pleased but after seeing it says I hadn't enjoyed it (no point lying, if I said I'd liked it she'd probably buy my a ticket for it again in a year or two).