More than my own life

BD: When Bella comes home from seeing Jay, she has a Christmas present for R, the locket that says “more than my own life” in French. Edward looks at it and reacts a little oddly. Bella says she knows that he knows she’s hiding something but not what. I’ve always wondered why he acted oddly to the locket, and on this listen I finally caught that when they’re sitting down to tell Charlie they’re getting married, Edward tells him he loves Bella more than his own life. So I assume he’s reacting to this repetition….does Bella really not remember? Is it not an odd coincidence?