Recently used emoji iphone...

this may sound silly but I was using my husbands phone to text a friend (my phone was dead) when I clicked on recently used emojis. A bunch of emojis he's never sent me came up. the ones that suggest sexual things (egg plant lol ) ect. On iPhone are frequently used emojis really the ones you've frequently used. I don't want to ask him because it sounds dumb but I'm curious (I don't have a iPhone)