Funny enough, I share the same birthday with Pier's brothers girlfriend, which is now affectionately called "The Girlfriend's Birthday". This also means that we have a combined dinner party.
While Pier has an older girlfriend (that would be me), his brother has a younger girlfriend. So this birthday I turned 35 and she turned 25. It's a funny gap. 10 years is alot but it dosen't feel like that much.