I've never met anyone named Valentine. I've never even heard of someone named Valentine for that matter. It's a bit surprising that some celebrity couple hasn't jumped on it. You have the cute nickname of Val. It means strong and healthy. And, of course, it conjures up notions of love and chocolate. Valentine Affleck totally works. I bet Gwen Stefani and Gavin Rossdale would have done it if they had (or were having) a girl.
To those of us named Valentine (no one that I know) and to those of us not named Valentine (everyone that I know) - I hope that today brings you the kind of love that exists at the Heathrow arrival gates. Have a fantastic Valentine's Day.