Whisper loves to be complimented... Secret is a lot more verbally affectionate than Whisper, but Whisper makes up for it in physical affection
I am really enjoying their wholesome dynamic, which contrasts like every single one of my other ocs haha.. they love eachother very much

Secret is also not very familiar with the concept of sexual contact aside from the purposes of reproduction, so she is very much enjoying the discovery of new pleasures (hence her surprise here and calling Whisper 'clever')