Via a citation on Wikipedia:
There's more to Mark Teixeira than just baseball. While promoting his work with the National Foundation for Cancer Research/Coppertone’s “Help Strike Out Sun Damage” program, the Yankee first baseman confessed he’s a big fan of the Great White Way. “My favorite musical of all time is ‘Les Miserables,’” he said. “But ‘Phantom of the Opera’ and ‘Miss Saigon’ are great too!”
So I guess we're pretty much dating now! Or not.