Confused

Been with the same guy for almost 2 years. Been having issues lately and I asked to go through his phone...his ex wife was his top favorite contact and to top it off had a picture of her tits as her contact picture. When asked about it he said that he just uploaded his contacts into his phone and that's when that happened, he doesn't have any other explanation. I've seen her contact before and it's never been a favorite or had that picture attached to it. Would you believe him??