That Feeling

The expression for such an experience can't be imagined except
you have been in a similar situation. Guess you wondering what
exact intuitive feeling I'm hammering on.
The very one that you try to hide but cannot be hidden. It is
written all over your face and there is nothing you can do to hide
it. An epitome would clarify what I really mean.
Godwin was with Sonya one evening after lectures, whilst they were
chatting and laughing she abruptly kissed him but they continued
chatting anyway.
Then Godwin told Joyce, Sonia's course mate,
who is Godwin's close friend but just that Sonia and Joyce ain't
that close. Coincidentally, Sonia happened to look through Godwin's
messages and read it all when he revisited her including Joyce not telling her.
She looked at him and he stood there with a face that looked like "I can explain".
That kind of feeling Godwin felt I mean.