I don't think my wife ever really tried to hide it. More of an uncertainty in her own mind and some anxiety, along with a building arousal, all before very much embracing and induging in it.
SML
I do love to get nice notes from my sexy wife saying that she's bringing a date home and suggest I wait till later to get home.
There were lots of arousals and thoughts in the beginnings. Much of them continue much later as well.. I very much enjoyed Naomi asking me when we could share her again soon.