They must have gotten water on them...

You blush, embarrased at his finding your clothes damp with your cum. At least he was being discreet... You decide to play it off...

"Perhaps they had water spilled on them somehow?" You say, anxious to see if he believes you... He pauses, seemingly unsure whether or not to say anything but he ends up believing you... "Of course my lady... It must be so... I'll send for your serving girl to fetch you some fresh clothes immediately..." He runs off without a word after saying so...