Should I mention our anniversary to my husband?

It's our 5 year anniversary next week, i think more than likely he has forgotten for the first time ever! The biggest reason he has never forgot before becuase i always talk about it leading up to it, making plans for dinner or something and Last year it happened to fall on a weekend so I planned a little get away! This year it's rolled around really quick and I haven't mentioned it once, I want to surprise him with a cute dinner at home and have the perfect gift in mind. I really really don't want to tell him for the sheer fact I want to see if he will remember (his cousins just had their 5 year anniversary this weekend and has posted alllll about it on fb which I feel could be a gentle reminder!) but I'd also hate for him to forgot and feel embarrassed and upset about it! Ladies what would you do?