I don't particularly enjoy wearing panties, but they are quite effective in preventing accidental penetration when intercourse is not in the cards.
The little interruption had been good for Ken in any event, as it gave him a little time to stew and sweat and wonder.
I caught Ken stroking his cock when I came back into the room.
I knew that he would be stroking it again before the night was over--the next time in the privacy of his own home.