Odd as it may sound (or it may not, I don't know), I've generally had birthday shags in past relationships, on mine and the other person's birthday
So current partner, been together one year. We had an evening out for my birthday. Beforehand I told him I was wearing a new underwear set and he said 'I look forward to seeing it later 😉'
We get back shortly after 11 and I make my move. He clearly isn't interested. I say 'oh are you not up for it now?'. He says he would've been earlier but now it's late and he's tired.
AIBU to be a bit concerned he just couldn't be arsed? I felt really disappointed. We're early 30s.