Reminds me of a story, this friend of mine came into work all bummed out.
He broke down and said he had a pic of his penis taken to show some girl he met on the net. His wife found the file and of course recognized it. He had to explain to his wife it was a joke and such. It didn't go over very well as expected. A few years later they divorced. (they had other issues besides that incident)

He is a strange one and his wife certainly is also. It wasn't going to workout.
It was the second marriage for them both. Their first marriage was to each other, heh. Third time won't be a charm i can assure you if that ever happens.

A different friend had trust issues obviously. When he would come home, usually out with a buddy drinking and watching a game or the like she would make him pull down his pants and she would smell for penis for the smell of sex.

Everyone told him NOT to marry that bitch she was truly trouble with a capital T. She had twins, a year later they divorced and child payments ensued.

"I should have listened to all of you" he would say. We just laughed at him and told he was fucked.

These two are free.
Edit: only free ones I know for mac
http://www.cgsecurity.org/wiki/TestDisk
or
http://www.cgsecurity.org/wiki/PhotoRec

Otherwise if you have access to a windows pc download Recuva which is free.