We hope Beau has the happiest Birthday Beau ever has!' Jennifer Lopez tweeted at her toy-boy lover rather ominously today.
It sounds as though she's keen for the rest of his anniversaries - and there should be many, considering he is just 25 - to be less enjoyable.
But what she lacks with tweetual precision, Jennifer,42, no doubt makes up for with generosity as she took Smart shopping in Beverly Hills.
It isn't clear if she was treating her man to some gifts, though it's likely, but we're sure Lopez wouldn't want to be branded a 'sugar mommy.'
The night before, JLo and Casper attended the Planet Dailies and Mixology 101 grand opening after the American Idol live results show.
But neither pair looked like they were suffering from a sore head, meaning the celebrations are sure to be continuing tonight.
Earlier this week the pair were spotted with her three-year-old twins Max and Emme at the Grove in Hollywood.
The I'm Into You singer decided to dress down for the outing wearing a matching white tracksuit emblazoned with the words 'Peace' down one leg, which she teamed with a pair of black trainers and sunglasses.
