Because we met seven years ago this weekend.
Funny story about these flowers: it is apparently hard to find a florist open on Labor Day. So he goes to a grocery store, where the checkout guy asked him who the flowers were for. He says, They're for my girlfriend. The guy goes, You in trouble? He says, No, it's for an anniversary. The guy goes, Then why you buyin 'em in a grocery store?? <3