My fiancee's ex boss sent an "I love you letter" WTF?

My fiancee still communicates with her ex-boss to help him out with his new office. He wrote her in an email that I wasn't supposed to see. In it he asks for some misplaced office documents and then ends it with "I love you. Thanks. Call later." Is this at all innocent? Ladies I need your input. Is he saying, "You're awesome, thanks for all the help, you are a life saver, I love you." or is it as I fear, a real, "I love you' ? This was four days ago. Her email response was strictly business, but they may have called.