love you too and rolled back over and went to sleep. >> a routine goodbye, or so it seemed until erin corwinhed without a trace. coming up, what had happened to erin? >> i called her throughout the night. >> how many times would you say you could try to call her, text her? >> at least 50 times. i was just so stressed and worried. >> he said aaron's missing. he said she left yesterday morning and i haven't seen her since. >> john was concerned but he was withdrawn. when you have a spouse who is not extremely frantic, you get a question, why aren't they super upset. we had a lot of questions for john. >> when dateline continues. new advil dual action back pain fights back pain two ways. for 8 hours of relief. how do i love thee? fights back pain two ways. ...let me count the ways. ♪ love can get a little messy... good thing there's resolve. love the love. resolve the mess. i'm adding downy unstopables to my wash. now i'll be smelling fresh all day long. (sniff) still fresh. still fresh! mmm, still fresh! get 6x longer-lasting freshness, plus odor protection with downy unstopables. how can you