lol......I have never come across someone who was unaware of what XO meant........why didn't you just ask her? And if you say "Id be too emberassed" then why is she your girlfriend? Whole point of dating someone is supposed to be that they accept you for you no matter if you might not know something.......besides girls will always know a crapload more lovey 'signals' than guys.......anyone ever get that....138 or 381, or 318, whatever it all means the same thing.....8 letters, 3 words, 1 meaning I believe it is........