My wife and I both worked for the same employer, her in Brazil, me in the U.S., and we met via our corporate messaging facility.
Our relationship went from professional to personal, we talked every day, usually on MSN, occasionally on the telephone, and finally I traveled to Sao Paulo for a couple of weeks to meet her. After a year we married, after what felt like years her K-1 was approved and we have been living together since the first of the year (2007).
