Obviously Cheating
Man, you know what's crazy?
When your husband sends you sexy pictures, and you save them to your phone, but then you notice they're placed on a suspicious timeline in your gallery weeks ago. A time when you were in the trenches of dealing with sick children, and he was very much out of town for work.
Hm, now why would you be spending that day taking naked, suggestive pictures?
(ducks, ducks, ducks)